[clang] [analyzer] Smarter range inference for {+,-,*} (PR #209048)

[Donát Nagy via cfe-commits]

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

LGTM, I'm really happy to see that this fixes some FIXMEs that I had to add in `ArrayBound` tests :smile:

https://github.com/llvm/llvm-project/pull/209048