[clang] [clang] Implement StmtPrinter for EmbedExpr (PR #135957)

[Mariya Podchishchaeva via cfe-commits]

Fznamznon wrote:

This might also fix https://github.com/llvm/llvm-project/issues/107869 since a similar fix was proposed earlier to fix it. I don't have any experience with clangd to verify though. 

https://github.com/llvm/llvm-project/pull/135957