add _no_split_modules attribute to SiglipVisionModel class

[power0341]

What does this PR do?

fix the bug:
ValueError: SiglipVisionModel does not support device_map='auto'. To implement support, the model class needs to implement the _no_split_modules attribute.

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[amyeroberts]

Hi @power0341, thanks for opening this PR!

There's a relevant issue here: #29786

To make sure this addition resolves the issue, please run the accelerate tests to confirm this enables device_map="auto":

pytest tests/models/{MODEL_NAME}/test_modeling_{MODEL_NAME}.py -vv -k "offload or parallelism"

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

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