[tests] add torch.compile test for HiDreamImageTransformer2DModel

[yuanjua]

What does this PR do?

This PR adds a torch.compile() test for the HiDreamImageTransformer2DModel class.

Relates to #11430

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@sayakpaul

[sayakpaul]

Hi, thanks for your PR.

Please see: #11477

[yuanjua]

Thank you! I overlooked the RUN_COMPILE variable, sorry for that!