[applets/systemtray] Filter configure action out of overflow menu correctly

This code was trying to filter out the configure action but failing
because it was comparing a QMenuItem to a QAction. We need to compare
the QMenuItem's internal QAction in order for the configure action to
ever match.

applets/systemtray/package/contents/ui/ExpandedRepresentation.qml

@@ -165,7 +165,7 @@ Item {
                         action: modelData
                     }
                     onObjectAdded: {
-                        if (object !== actionsButton.applet.action("configure")) {
+                        if (object.action !== actionsButton.applet.action("configure")) {
                             configMenu.addMenuItem(object);
                         }
                     }