[MPS] Fix exception regex not compared (#100367)
Previously when using `self.assertRaisesRegex` to test raised exception and its regex, the regex wasn't actually compared because mps was not in the `NATIVE_DEVICES`. This PR fixes that by enabling exception regex comparisons for mps device.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/100367
Approved by: https://github.com/albanD
