[llvm] [BOLT][AArch64] Handle OpNegateRAState to enable optimizing binaries with pac-ret hardening (PR #120064)

[Gergely Bálint via llvm-commits]

bgergely0 wrote:

Force push: I had to rebase to main, so I have the change from #137795 for C/C++ tests. See [this earlier comment](https://github.com/llvm/llvm-project/pull/120064#issuecomment-2821064959).

https://github.com/llvm/llvm-project/pull/120064