Debugger: Fix passing tooltips from to toolbuttons

Visible in the O and <> buttons of the Callgrind toolbar.

Change-Id: I1016f853335bfc243f7e934e7a0cd430922c8af6
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/libs/utils/aspects.cpp

@@ -1324,6 +1324,7 @@ QAction *BoolAspect::action()
     auto act = BaseAspect::action(); // Creates it.
     act->setCheckable(true);
     act->setChecked(value());
+    act->setToolTip(toolTip());
     connect(act, &QAction::triggered, this, [this](bool newValue) {
         // The check would be nice to have in simple conditions, but if we
         // have an action that's used both on a settings page and as action