IndicatorMenuItemFactory: use changeState() for switch
Now that we updated the Ayatana Indicators, we can now use changeState() with both the old-style, new-style, and old-style mis-labeled as new-style.
Now that we updated the Ayatana Indicators, we can now use changeState() with both the old-style, new-style, and old-style mis-labeled as new-style.