[MPS] Some of the `DPTForDepthEstimation` ops are not supported on MPS

[anton-l]

To reproduce, remove the mps skips in StableDiffusiondepth2imgPipelineFastTests:

https://github.com/huggingface/diffusers/blob/cd91fc06fe9513864fca6a57953ca85a7ae7836e/tests/pipelines/stable_diffusion_2/test_stable_diffusion_depth.py#L154

This is probably solvable on the transformers side, but opening an issue here too to keep track of the testing :)

[patrickvonplaten]

This would be nice to fix indeed!

[pcuenca]

Thanks @anton-l, I'll take a look :)

[patrickvonplaten]

Gently reminder @pcuenca :-)

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