applets/manage-inputmethod: only make it active in tablet mode
requested to merge ngraham/plasma-workspace:dont-show-virtualkeyboard-applet-outside-of-tablet-mode into master
Outside of tablet mode, you don't need a virtual keyboard except for the extremely niche case of not having a physical keyboard plugged into a desktop machine. For all other use cases, the tray item to show and hide the virtual keyboard is an annoyance when you're not in tablet mode, so let's demote it to the expanded popup to save space in the System Tray and make its contents more contextually relevant.