activated, when the system is in double click mode is only triggered
on double click. but even with in double click mode we want side panels to
trigger on single clicks. so we need both clicked and activated.
double-activation continues to be properly guarded in clickedSlot, so
this change looks to be save vis-a-vis state changes in the UI
BUG: 405373
FIXED-IN: 5.15.3
CHANGELOG: single-clicks correctly activate modules again when the system is in double-click mode