Fix typing issues with SigLip2
Author: EricWiener
Pull request: yes

# What does this PR do?
Fixes #36754 


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Comments:
For sure and thanks for the quick review @qubvel ! Do you know if the failing tests are known to be flakey or could these failures be due to the slight difference in the type hints? Ex:
```
FAILED tests/models/kosmos2/test_modeling_kosmos2.py::Kosmos2ModelTest::test_generate_continue_from_past_key_values - AssertionError: Lists differ: [[86,[209 chars], 1, 1], [23, 21, 44, 83, 82, 86, 30, 54, 25, [277 chars] 25]] != [[86,[209 chars], 1, 45], [23, 21, 44, 83, 82, 86, 30, 54, 25,[278 chars] 25]]
```

That's unrelated test failures, waiting for CI to pass to be able to merge

Hi @qubvel, could we please merge?

Sure, thanks!