[llvm] [AMDGPU] Refine GCNHazardRecognizer hasHazard() (PR #138841)

[Diana Picus via llvm-commits]

https://github.com/rovka approved this pull request.

This looks fine to me with a couple readability nits, but please wait a few days in case Jay wants to have another look.

https://github.com/llvm/llvm-project/pull/138841