[lld] [lld][WebAssembly] Always search *.so for -Bdynamic (PR #84288)

[Derek Schuff via llvm-commits]

dschuff wrote:

Yes, it looks ready. Do you just need someone to land it? Can you make sure the commit message is up-to-date in the top comment?

https://github.com/llvm/llvm-project/pull/84288