[tests] Add torch.compile() test for WanTransformer3DModel

[tongyu0924]

What does this PR do?

This PR adds a torch.compile() test for the WanTransformer3DModel class.

Part of #11430

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• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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[sayakpaul]

@tongyu0924 any reason why this was closed?

[tongyu0924]

@tongyu0924 any reason why this was closed?

Hi! I closed it earlier since I wasn't really sure if it was right. Just reopened it—figure it's okay to leave it open now. Thanks for following up!

[sayakpaul]

Let us know if it's ready for a review.

[tongyu0924]

Let us know if it's ready for a review.

Thanks! It's ready for review now. Let me know if anything needs adjustment

[sayakpaul]

Closing in favor of #11475 and that PR already includes your contribution: