[MPS] Copy fixes for MPS backend (#95321)
* [MPS] Handle broadcasting by expanding src tensor in Copy.mm (#95272)
Fixes #ISSUE_NUMBER
Pull Request resolved: https://github.com/pytorch/pytorch/pull/95272
Approved by: https://github.com/DenisVieriu97
* [MPS] Fix copy_cast_mps() on tensors with storage offset (#95093)
- The copy_cast path requires storage_offset to be applied before casting
- This should fix some correctness issues in transformer models
Fixes #94980
Pull Request resolved: https://github.com/pytorch/pytorch/pull/95093
Approved by: https://github.com/kulinseth
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Co-authored-by: Ramin Azarmehr <razarmehr@apple.com>
