[lld-macho] Fix __objc_stubs ordering

In the case of large binaries previously you could end up getting
relocation failures. This mirrors ld64's ordering of these sections. I'm
not sure this solves all cases but it should help in some.

Fixes https://github.com/llvm/llvm-project/issues/58298

Differential Revision: https://reviews.llvm.org/D139909