ruff

5a4516b8 - Misc. stylistic changes from flipping through rules late at night (#5757)

Misc. stylistic changes from flipping through rules late at night (#5757) ## Summary This is really bad PR hygiene, but a mix of: using `Locator`-based fixes in a few places (in lieu of `Generator`-based fixes), using match syntax to avoid `.len() == 1` checks, using common helpers in more places, etc. ## Test Plan `cargo test`