Fix AqlmConfig error messages to say "int" instead of "float"
Author: Sreekant13
Pull request: yes

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# What does this PR do?

`AqlmConfig.post_init` validates that `in_group_size`, `out_group_size`, `num_codebooks` and `nbits_per_codebook` are ints (`not isinstance(x, int)`), but the raised `TypeError` messages say each "must be a float". That's misleading - passing a float is exactly what triggers the error, so a user who hits it and then passes another float stays stuck.

```python
from transformers import AqlmConfig
AqlmConfig(num_codebooks=2.0)
# TypeError: num_codebooks must be a float   (but an int is what's actually required)
```

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Fixes # (issue)
No linked issue - small self-contained fix.

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Comments:
**[For maintainers]** Suggested jobs to run (before merge)

run-slow: aqlm_integration

@bot /style

Style fix bot fixed some files and pushed the changes.

There's some arg types causing CI failures right now, we can rebase this tomorrow and hopefully merge it then

Thanks for the review and approval, @Rocketknight1! Happy to rebase whenever it's useful, otherwise I will leave it to you tomorrow. Thanks again!

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