MPS: Fixes the as_strided_mps implementation for contiguous view operations (#78440)
Fixes https://github.com/pytorch/pytorch/issues/78107; https://github.com/pytorch/pytorch/issues/77750
Pull Request resolved: https://github.com/pytorch/pytorch/pull/78440
Approved by: https://github.com/malfet
(cherry picked from commit d63db52349ae3cffd6f762c9027e7363a6271d27)
