[clang] [llvm] Reland "[analyzer][NFC] Reorganize Z3 report refutation" (PR #97265)

[Donát Nagy via cfe-commits]

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

Let's merge this again, after the Z3 version there shouldn't be any additional problems. 

https://github.com/llvm/llvm-project/pull/97265