[clang] [clang-tools-extra] Reland [clang][Sema, Lex, Parse] Preprocessor embed in C and C++ (PR #95802)

[Mariya Podchishchaeva via cfe-commits]

Fznamznon wrote:

Buildbot failure, I'm looking https://lab.llvm.org/buildbot/#/builders/176/builds/226 .

https://github.com/llvm/llvm-project/pull/95802