_check_icon_to_type now queries Gtk.IconTheme for the icon name (with -symbolic suffix) before falling back to a hardcoded mapping. _get_icon_for_device simplified since type property now returns GTK icon names directly.
_check_icon_to_type now queries Gtk.IconTheme for the icon name (with -symbolic suffix) before falling back to a hardcoded mapping. _get_icon_for_device simplified since type property now returns GTK icon names directly.