a63ba61194
Unlike regular keys that generate key events from a virtual device, emoji keys rely on the input method to insert the character. However as the compositor cannot inject IM events into ibus, this only works in the shell's own entries on X11. We shouldn't expose mostly broken functionality to the user, so limit the feature to the wayland session. https://gitlab.gnome.org/GNOME/gnome-shell/issues/1172