To make the ULS usable from the keyboard we need to:
- Allow the ULS to be opened when pressing enter or space if the cog is focused.
- Allow Display and Input tabs be focused in ULS personal toolbar mode using tab key and allow enter&space as trigger.
- Allow Display and Input panes to be focused in ULS settings view using tab key and allow enter&space as trigger.
Pressing space should not scroll the screen when focus is on the cog or input/display.
See Also: T52575: Languages cogwheel missing accessibility features