[clang] [analyzer] Don't rule out symbolic pointer pointing to stack (PR #187080)

[Donát Nagy via cfe-commits]

NagyDonat wrote:

> Judge how much Daniel contributed, and use co-authored marker if you think deserved.

I decided to mention him in a `Reported-by` field because that seems to be the most accurate description of his contribution, but @dkrupp I'm open to change this if you don't agree.

https://github.com/llvm/llvm-project/pull/187080