[clang][driver][clang-cl] Fix unused argument warning for `/std:c++20` for precompiled module inputs to `clang-cl`#99300

ChuanqiXu9 merged 3 commits intollvm:mainllvm/llvm-project:mainfrom

sharadhr:clang-cl-modules-unused-argumentsharadhr/llvm-project:clang-cl-modules-unused-argumentCopy head branch name to clipboard