fix buttongroup state toggles
this was recently changed on the BugAwarenessPage and broke state tracking as idPressed is emitted when pressing down, before the group state actually switches. the yes/no group on that page was effectively inverted as updateCheckBoxes was called before the property update and thus when the user clicked Yes the internal state in the slot was still No and vice versa.
the duplicates dialog similarly was wrong but it's much harder to stumble over since the relevant UI elements are only visible when trying to mark a bug duplicate to a closed bug or a "common" bug
use the idClicked signal instead, it's what the code originally used (as the now deprecated buttonClicked)