[lld] [ELF] Orphan placement: prefer the last similar section when its rank <= orphan's rank (PR #94099)

[Fangrui Song via llvm-commits]

MaskRay wrote:

I have captured lld's algorithm in https://maskray.me/blog/2024-06-02-understanding-orphan-sections , which is hopefully useful.

https://github.com/llvm/llvm-project/pull/94099