[compiler-rt] [compiler-rt] Don't rely on automatic codesigning with Apple's linker (PR #91681)

[Julian Lettner via llvm-commits]

yln wrote:

Ah, I didn't realize to you don't have PR merge privileges / commit access.

I will merge this for you on Tue morning (Mo is holiday in US) to avoid landing this just before the weekend reduce friction.  Feel free to ping me if I haven't done this by Tue evening.

If something goes wrong, people will comment here (and are allowed to revert our change).  Please respond in a timely matter.

Adding reviewers for visibility: @thetruestblue @wrotki 

https://github.com/llvm/llvm-project/pull/91681