navigatable
Description:
Whether the child can be navigated to when folded.
Note:
See [the migration guide](migrating-to-breakpoints.html#replace-adwleaflet)
If `FALSE`, the child will be ignored by [method@Leaflet.get_adjacent_child], [method@Leaflet.navigate], and swipe gestures.
This can be used used to prevent switching to widgets like separators.