[lld] [lld][MachO] Respect dylibs linked with `-allowable_client` (PR #114638)

[Nico Weber via llvm-commits]

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

Thanks, code looks good to me.

I patched this in and verified that Chromium Framework.framework still links fine with this, just to make sure :)

Do you have commit permissions, or do you want me to push the button?

https://github.com/llvm/llvm-project/pull/114638