ruff

4a621c2c - [red-knot] Fix recording of negative visibility constraints (#17731)

[red-knot] Fix recording of negative visibility constraints (#17731) ## Summary We were previously recording wrong reachability constraints for negative branches. Instead of `[cond] AND (NOT [True])` below, we were recording `[cond] AND (NOT ([cond] AND [True]))`, i.e. we were negating not just the last predicate, but the `AND`-ed reachability constraint from last clause. With this fix, we now record the correct constraints for the example from #17723: ```py def _(cond: bool): if cond: # reachability: [cond] if True: # reachability: [cond] AND [True] pass else: # reachability: [cond] AND (NOT [True]) x ``` closes #17723 ## Test Plan * Regression test. * Verified the ecosystem changes