Fix whitespace linting + backlog of whitespace issues

[pushfoo]

tl;dr

1. Closes CI doesn't pick up multiple whitespace style issues #1701
2. Switching to ruff broke linting in since it's not actually a drop-in replacement
3. Adding "W" to the select list in [tool.ruff] re-enables whitepsace linting

We should merge this PR quickly because:

1. It can affect PyCon mentored sprint participants
2. It has already been affecting junior contributors (see Clean _check_for_collision #1702 (comment)).
3. Whitespace issues have been accumulating since February when we switched to ruff (1a3e993)