[clang] [analyzer] EvalBinOpLL should return Unknown less often (PR #114222)

[Gábor Horváth via cfe-commits]

https://github.com/Xazax-hun commented:

Makes sense for me. It would be nice if we had a minimal reproducer for a regression test instead of maintaining a large-ish test.

https://github.com/llvm/llvm-project/pull/114222