[clang] Use *Map::try_emplace (NFC)#143563

kazutakahirata merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

kazutakahirata:cleanup_20250610_try_emplace_clangkazutakahirata/llvm-project:cleanup_20250610_try_emplace_clangCopy head branch name to clipboard