[lld] [lld][WebAssembly] Fix use of undefined funcs under --warn-unresolved-symbols (PR #78643)

[Felipe de Azevedo Piovezan via llvm-commits]

felipepiovezan wrote:

Yeah that's fair, the only reason I brought it up is because it is a crash in LLD, and the other change that got included in that build was a debug info change...

https://github.com/llvm/llvm-project/pull/78643