Descoped prerequisite: T257075: Simplify the checkboxHack API
Current checkbox hack in action on latest Vector doesn't react to <Enter> or <Space>.
This should toggle the checkbox too.
- Label that behaves as button is triggerable
QA Results - Beta|Prod
QA additional notes
Holding the <Enter> key only changes the Sidebar state once, not repeatedly
It's been agreed on that we remove this edge case from the acceptance criteria in T254851#6349847