[lld] [lld][WebAssembly] Allow `--trace-symbol` to work with symbols with custom import names (PR #96119)

[Heejin Ahn via llvm-commits]

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@@ -526,6 +535,7 @@ Symbol *SymbolTable::addUndefinedFunction(StringRef name,
     printTraceSymbolUndefined(name, file);
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aheejin wrote:

This function contains a call to `traceImport` which calls `printTraceSymbolUndefined`. So I guess if `s->traced` and `wasInserted` are both true it can be called twice?

https://github.com/llvm/llvm-project/pull/96119