[llvm] [bolt] Resolve duplicated symbols name through versioning (PR #203223)

[Paschalis Mpeis via llvm-commits]

https://github.com/paschalis-mpeis commented:

 Hey Alexey,

Thanks for your patch. Registering a versioned name would break parent fragment lookups later. Please check `X86/libmysqlclient-entry-cold.test`.

You can also check this by adding `foo.cold` to your test.

https://github.com/llvm/llvm-project/pull/203223