[clang] [analyzer] Never create Regions wrapping reference TypedValueRegions (NFCI) (PR #118096)

[Gábor Horváth via cfe-commits]

Xazax-hun wrote:

Sorry, I might have been a bit unclear.

> We should never have reference typed value regions wrapped by subregions.

I think my question is what makes the "wrapped by subregions" part special? Why not just "never have reference typed value regions"?

https://github.com/llvm/llvm-project/pull/118096