[llvm] [BOLT][RISCV] Carry-over annotations when fixing calls (PR #66763)

[Vladislav Khmelevsky via llvm-commits]

https://github.com/yota9 approved this pull request.

overall lgtm. I had the same problems with golang, be aware that BF.fixBranches() may remove instructions too

https://github.com/llvm/llvm-project/pull/66763