[clang] [llvm] [analyzer] Consolidate array bound checkers (PR #125534)

[Donát Nagy via cfe-commits]

NagyDonat wrote:

The unittest failure seems to be random nonsense, apparently the Python package `psutil` is not available on that windows machine:
> llvm-lit.py: C:\a\lld-x86_64-win\build\utils\lit\tests\lit.cfg:111: warning: Setting a timeout per test not supported. Requires the Python psutil module but it could not be found. Try installing it via pip or via your operating system's package manager.

My commit doesn't change any lit test configuration and does not touch any test that has timeouts.

https://github.com/llvm/llvm-project/pull/125534