...and call actions after closing menus so that virtual keyboard input
caused by actions are sent to the surface with keyboard-focus rather
than being consumed by the open menu.
Fixes: #1366
When assertions are disabled, providing an unexpected input to
cursor_get_from_edge will cause the non-void function to terminate
without a return value. This may be effectively unreachable in practice.
However, returning a default cursor as a fall-through case will both
silence a compiler warning and prevent catastrophy should the function
ever be called with a permitted value.
We already allow some xwayland-unmanaged surfaces to take focus on map,
if indicated by wlr_xwayland_or_surface_wants_focus(). But once these
surfaces lose focus, they never regain it again.
Add desktop_focus_view_or_surface() and call it in the appropriate
places to allow these views to regain focus in the usual ways (e.g.
clicking on them or focus-follows-mouse).
