Re-enable import sorting disabled by flake8:noqa directive when using ruff linter

Re-enable import sorting that was wrongly disabled by `flake8: noqa` directive after switching to `ruff` linter in datasets-2.10.0 PR:
- #5519

Note that after the linter switch, we wrongly replaced `flake8: noqa` with `ruff: noqa` in datasets-2.17.0 PR:
- #6619

That replacement was wrong because we kept the `isort: skip` directives although they were indeed disabled by `flake8: noqa` first and by `ruff: noqa` afterwards. See for example `__init__.py` file after the linter switch:
- We kept the `flake8: noqa` directive
https://github.com/huggingface/datasets/blob/06ae3f678651bfbb3ca7dd3274ee2f38e0e0237e/src/datasets/__init__.py#L1
- Whereas we also kept the `isort: skip` directives (that were disabled)
https://github.com/huggingface/datasets/blob/06ae3f678651bfbb3ca7dd3274ee2f38e0e0237e/src/datasets/__init__.py#L82-L84

Fix #6942.

Comments:
The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_6946). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

<details>
<summary>Show benchmarks</summary>

PyArrow==8.0.0

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.004847 / 0.011353 (-0.006506) | 0.003199 / 0.011008 (-0.007810) | 0.060677 / 0.038508 (0.022169) | 0.030544 / 0.023109 (0.007435) | 0.240870 / 0.275898 (-0.035028) | 0.261320 / 0.323480 (-0.062160) | 0.002816 / 0.007986 (-0.005170) | 0.002483 / 0.004328 (-0.001845) | 0.048527 / 0.004250 (0.044277) | 0.045496 / 0.037052 (0.008444) | 0.251296 / 0.258489 (-0.007193) | 0.285746 / 0.293841 (-0.008095) | 0.025076 / 0.128546 (-0.103470) | 0.009417 / 0.075646 (-0.066229) | 0.191361 / 0.419271 (-0.227911) | 0.033778 / 0.043533 (-0.009755) | 0.235581 / 0.255139 (-0.019558) | 0.261069 / 0.283200 (-0.022131) | 0.018255 / 0.141683 (-0.123428) | 1.098437 / 1.452155 (-0.353718) | 1.127124 / 1.492716 (-0.365592) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.004479 / 0.018006 (-0.013527) | 0.283706 / 0.000490 (0.283216) | 0.000214 / 0.000200 (0.000014) | 0.000043 / 0.000054 (-0.000011) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.018364 / 0.037411 (-0.019048) | 0.058398 / 0.014526 (0.043872) | 0.073056 / 0.176557 (-0.103501) | 0.117147 / 0.737135 (-0.619989) | 0.073683 / 0.296338 (-0.222656) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.265121 / 0.215209 (0.049912) | 2.636981 / 2.077655 (0.559327) | 1.380192 / 1.504120 (-0.123928) | 1.270779 / 1.541195 (-0.270416) | 1.295729 / 1.468490 (-0.172762) | 0.523768 / 4.584777 (-4.061009) | 2.295720 / 3.745712 (-1.449992) | 2.519211 / 5.269862 (-2.750650) | 1.618712 / 4.565676 (-2.946965) | 0.058321 / 0.424275 (-0.365954) | 0.004492 / 0.007607 (-0.003115) | 0.316101 / 0.226044 (0.090057) | 3.169913 / 2.268929 (0.900984) | 1.793412 / 55.444624 (-53.651213) | 1.473784 / 6.876477 (-5.402693) | 1.565325 / 2.142072 (-0.576748) | 0.592734 / 4.805227 (-4.212493) | 0.109333 / 6.500664 (-6.391331) | 0.039063 / 0.075469 (-0.036406) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.935504 / 1.841788 (-0.906284) | 10.865520 / 8.074308 (2.791212) | 9.219337 / 10.191392 (-0.972055) | 0.135284 / 0.680424 (-0.545140) | 0.013664 / 0.534201 (-0.520537) | 0.271601 / 0.579283 (-0.307682) | 0.260456 / 0.434364 (-0.173908) | 0.302931 / 0.540337 (-0.237406) | 0.414643 / 1.386936 (-0.972293) |

</details>
PyArrow==latest

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.004801 / 0.011353 (-0.006552) | 0.003092 / 0.011008 (-0.007917) | 0.046471 / 0.038508 (0.007963) | 0.031337 / 0.023109 (0.008228) | 0.258920 / 0.275898 (-0.016978) | 0.269842 / 0.323480 (-0.053638) | 0.003976 / 0.007986 (-0.004009) | 0.002661 / 0.004328 (-0.001668) | 0.045676 / 0.004250 (0.041426) | 0.038199 / 0.037052 (0.001146) | 0.277382 / 0.258489 (0.018893) | 0.289351 / 0.293841 (-0.004490) | 0.028452 / 0.128546 (-0.100094) | 0.009737 / 0.075646 (-0.065910) | 0.055201 / 0.419271 (-0.364071) | 0.032686 / 0.043533 (-0.010847) | 0.259617 / 0.255139 (0.004478) | 0.277163 / 0.283200 (-0.006037) | 0.017825 / 0.141683 (-0.123858) | 1.102797 / 1.452155 (-0.349357) | 1.105018 / 1.492716 (-0.387699) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.094844 / 0.018006 (0.076838) | 0.290519 / 0.000490 (0.290029) | 0.000211 / 0.000200 (0.000012) | 0.000050 / 0.000054 (-0.000004) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.021917 / 0.037411 (-0.015494) | 0.075278 / 0.014526 (0.060753) | 0.085971 / 0.176557 (-0.090586) | 0.127072 / 0.737135 (-0.610063) | 0.088244 / 0.296338 (-0.208095) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.276704 / 0.215209 (0.061495) | 2.736960 / 2.077655 (0.659305) | 1.519634 / 1.504120 (0.015514) | 1.403026 / 1.541195 (-0.138168) | 1.418465 / 1.468490 (-0.050025) | 0.552425 / 4.584777 (-4.032352) | 0.955244 / 3.745712 (-2.790468) | 2.556563 / 5.269862 (-2.713298) | 1.705095 / 4.565676 (-2.860582) | 0.061212 / 0.424275 (-0.363063) | 0.004707 / 0.007607 (-0.002900) | 0.326284 / 0.226044 (0.100239) | 3.253911 / 2.268929 (0.984983) | 1.868649 / 55.444624 (-53.575976) | 1.598697 / 6.876477 (-5.277780) | 1.682617 / 2.142072 (-0.459455) | 0.606379 / 4.805227 (-4.198848) | 0.114126 / 6.500664 (-6.386538) | 0.038869 / 0.075469 (-0.036601) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.966354 / 1.841788 (-0.875433) | 11.575918 / 8.074308 (3.501609) | 9.816597 / 10.191392 (-0.374795) | 0.141492 / 0.680424 (-0.538932) | 0.015375 / 0.534201 (-0.518826) | 0.276027 / 0.579283 (-0.303256) | 0.118979 / 0.434364 (-0.315385) | 0.313467 / 0.540337 (-0.226870) | 0.403539 / 1.386936 (-0.983397) |

</details>
</details>

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