[MPS] Fix bernoulli for int types (#100946)
<!--
copilot:summary
-->
### <samp>🤖 Generated by Copilot at 069fd23</samp>
This pull request enhances the MPS implementation of random operations in `Distributions.mm` and adds more dtype tests for the bernoulli distribution in `test_mps.py`. This improves the performance, correctness, and usability of the MPS backend for PyTorch.
Fixes https://github.com/pytorch/pytorch/issues/100717
Pull Request resolved: https://github.com/pytorch/pytorch/pull/100946
Approved by: https://github.com/kulinseth
