[lld] [lld-macho] Use larger ordinal encoding if import count requires it (PR #98305)

[Nico Weber via llvm-commits]

https://github.com/nico commented:

Should we add things like `assert(libOrdinal <= 255)` to writeImport()? (Not necessarily in this PR)

https://github.com/llvm/llvm-project/pull/98305