Fix: Disable torch.autocast in RotaryEmbedding of Gemma and LLaMa for MPS device
Author: currybab
Pull request: yes

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Fixes #29431

The issue on MPS devices was caused by the merge of #29285 in version 4.38.2.


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Comments:
FYI @fxmarty and @gante ! 

I have not tested this with `compile` but the dtype should be alright to check / we can always check self.dtype to not be input dependant

Hi everybody. I'm having the same error, does anyone know how to fix it?

RuntimeError: User specified an unsupported autocast device_type 'cuda:0'

![image](https://github.com/user-attachments/assets/184e3163-dfac-41f4-b670-ccb84783fb8a)


Do you have a reproducer?