[llvm] [llvm-dlltool] Handle import renaming using other name types, when possible (PR #98228)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

This goes on top of https://github.com/llvm/llvm-project/pull/98226, only the topmost commit is for review here.

https://github.com/llvm/llvm-project/pull/98228