[clang-tidy][NFC] Refactor `modernize-use-trailing-return-type-check` check code and tests#140759

vbvictor merged 4 commits intollvm:mainllvm/llvm-project:mainfrom

vbvictor:refactor-use-trailing-return-typevbvictor/llvm-project:refactor-use-trailing-return-typeCopy head branch name to clipboard