[clang] [analyzer] Fix wrong `builtin_*_overflow` return type (PR #111253)

[Pavel Skripkin via cfe-commits]

pskrgag wrote:

CI looks unrelated 

```
bk;t=1728134304433Failed Tests (1):

_bk;t=1728134304433  LLVM :: Transforms/InstCombine/and-or-icmps.ll
```

Should I re-trigger it just in case?

https://github.com/llvm/llvm-project/pull/111253