[clang][DebugInfo][test] Set -fuse-lld for test matching linker invocation. (#190291) This test doesn't work as intended when an alternative default linker is specified via `-DCLANG_DEFAULT_LINKER=ld`. If this test isn't intended to support alternate default linker, lmk I can just change the downstream usage I'm seeing, though I figure other folks may have similar configurations. Repro: ``` cmake -S llvm -B build -DLLVM_ENABLE_PROJECTS="clang" -DCLANG_DEFAULT_LINKER=ld -GNinja ninja -C build ./build/bin/llvm-lit -v clang/test/DebugInfo/CXX/hotpatch.cpp ... possible intended match # | 6: "/usr/bin/ld" "-out:hotpatch.exe" "-libpath:lib/amd64" "-libpath:atlmfc/lib/amd64" "-nologo" "-functionpadmin" "/tmp/lit-tmp-o7x0r1o_/hotpatch-4595de.obj" ``` afaict it passed before because `-mincremental-linker-compatible` was being used until e97a42d5f9fe51de50aabd4d9bf6874a4955f9fa, which would match on the compilation line.
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