Re-add default list item highlight
Typically we remove these hover and highlight effects for list items that arenon-interactive where hover and keyboard navigation don't make sense.
But that's not the case here; these list items are interactive (clicking them toggles their checkbox) and therefore keyboard navigation does make sense.
Accordingly, let's stop removing the default list item hover and highlight effects to make this interactivity obvious and allow keyboard navigation to be usable.
BUG: 465951 FIXED-IN: 5.27.3