[llvm] [Bolt] fix a wrong relocation update issue with weak references (PR #69136)

[Vladislav Khmelevsky via llvm-commits]

yota9 wrote:

@maksfb @rafaelauler If no ojections I would like to merge this patch by the end of a week and backport it to 19x. Thanks!

https://github.com/llvm/llvm-project/pull/69136