[TableGen] Use "= default" (NFC)#165968

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

kazutakahirata:cleanup_20251031_clang_tidy_modernize-use-equals-default_TableGenkazutakahirata/llvm-project:cleanup_20251031_clang_tidy_modernize-use-equals-default_TableGenCopy head branch name to clipboard