Carlos Garnacho authored Sep 27, 2019 and Jonas Ådahl committed Sep 27, 2019

The meta_display_update_focus_window() call has indirect dependencies
on the X11 focus window, in order to determine the correct focus window
on the Wayland side (i.e. may turn out NULL with certain X windows).

In order to have the right x11_display->focus_xwindow there, we should
perform first the focus update on the X11 display.

Fixes focusing of Java applications, as those don't seem to go through
_NET_ACTIVE_WINDOW.

Closes: #819