[llvm] [Peephole] Check instructions from CopyMIs are still COPY (PR #69511)

[via llvm-commits]

mikaelholmen wrote:

I have no idea if this is the way to solve the problem, but I've verified that this patch fixes the problem I saw in
 https://reviews.llvm.org/D151848#4654329

Thanks!

https://github.com/llvm/llvm-project/pull/69511