[clang] [clang][StaticAnalyzer] Add enclosing Decl information to bug reports of RawPtrRef(LocalVars|Member)Checker (PR #214102)

[Balázs Benics via cfe-commits]

https://github.com/steakhal approved this pull request.

LGTM because it demonstrably works and strictly better than what we used to have!

https://github.com/llvm/llvm-project/pull/214102