[llvm] Reland "[RegAlloc] Fix the terminal rule check for interfere with DstReg (#168661)" (PR #169219)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 approved this pull request.

LGTM assuming premerge passes. If you land this later, might be a good idea to rerun tests to make sure nothing has changed.

https://github.com/llvm/llvm-project/pull/169219