[lld] [lld-macho] Fix duplicate GOT entries for personality functions (PR #95054)

[Nico Weber via llvm-commits]

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

Makes sense to me, thanks!

@oontvoo has looked at this in the past, and @speednoisemovement is generally looking at lld things, so cc'ing them for their information. Feel free to hit "merge" in a few hours though :)

https://github.com/llvm/llvm-project/pull/95054