ruff

942cb9e3 - [red-knot] Add regression tests for narrowing constraints cycles (#17408)

[red-knot] Add regression tests for narrowing constraints cycles (#17408) ## Summary closes #17215 This PR adds regression tests for the following cycled queries: - all_narrowing_constraints_for_expression - all_negative_narrowing_constraints_for_expression The following test files are included: - `red_knot_project/resources/test/corpus/cycle_narrowing_constraints.py` - `red_knot_project/resources/test/corpus/cycle_negative_narrowing_constraints.py` These test names don't follow the existing naming convention based on Cinder. However, I’ve chosen these names to clearly reflect the regression cases. Let me know if you’d prefer to align more closely with the existing Cinder-based style. ## Test Plan ```sh git checkout 1a6a10b30 cargo test --package red_knot_project -- corpus ```