[lld] [LLD][COFF] Check both mangled and demangled symbols before adding a lazy archive symbol to the symbol table on ARM64EC (PR #113284)

[Martin Storsjö via llvm-commits]

================
@@ -130,3 +145,8 @@ thunksym:
     .globl func
 func:
     ret
+
+#--- func.def
+LIBRARY func.dll
+EXPORTS
+        func
----------------
mstorsjo wrote:

The file seems to be missing a trailing newline here.

https://github.com/llvm/llvm-project/pull/113284