[clang] [clang] Fix underlying type of EmbedExpr (PR #99050)

[Mariya Podchishchaeva via cfe-commits]

Fznamznon wrote:

I can add test with sizeof for sure, the problem is that it is already working https://godbolt.org/z/K69v8KPYa and we have similar ones in codebase already.
The test I'm struggling with is to check that elements in initializer list that are expanded from embed also have int type.


https://github.com/llvm/llvm-project/pull/99050