GTK3: Fixed hint flickering when mouse moves.
Closes: #37712 (closed).
When mouse moves but remains over the same widget, we should not
recreate the hint window. Just break execution and 'exit ActivateHint
function early.
Closes: #37712 (closed).
When mouse moves but remains over the same widget, we should not
recreate the hint window. Just break execution and 'exit ActivateHint
function early.