dtype in ModelConfig will be implicitly casted to torch.dtype so in tpu_jax, we need to check for torch dtype as well

[lc5211]

Description

dtype in ModelConfig will be implicitly casted to torch.dtype so in tpu_jax, we need to check for torch dtype as well

Tests

Tested with upstream integration in Tunix

Checklist

Before submitting this PR, please make sure:

• I have performed a self-review of my code.
• I have necessary comments in my code, particularly in hard-to-understand areas.
• I have made or will make corresponding changes to any relevant documentation.

[github-actions]

Description

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the past.

The rest of the description includes relevant details and context, examples:

• why is this change being made,
• the problem being solved and any relevant context,
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FIXES: b/123456
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Tests

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Checklist

Before submitting this PR, please make sure:

• I have performed a self-review of my code.
• I have necessary comments in my code, particularly in hard-to-understand areas.
• I have made or will make corresponding changes to any relevant documentation.