馃崚 applets/systemtray: suppress useless tooltips
A tooltip is useless when its text is 100% identical to the visible text of whatever you're hovering the pointer over. Let's not show them. We'll still show the tooltip if its text is different in any way, just not if it's identical.
BUG: 494463 FIXED-IN: 6.2.4
(cherry picked from commit 83f83a07)
Co-authored-by: Nate Graham nate@kde.org