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

[YAMAMOTO Takashi via llvm-commits]

yamt wrote:

> I'm actually not sure what would happen if you did -Bdynamic without -shared or -pie .. I don't think that is something that is currently supported. Have you tried it?

yes. it has been working for toywasm at least.
https://github.com/yamt/garbage/blob/1ddf7388fc91c31beed54101685e5d90573b43ef/c/shlib/wasi.sh#L70-L91


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