Comment 4 for bug 1709261

Landed a fix that stops showing the hidden windows (and thus stealing focus) and instead shows a notification. Besides not working on Wayland today, the old way of showing a window without stealing focus won't work on Gtk4 at all.

https://gitlab.gnome.org/World/deja-dup/-/commit/8d78b4d5d71bc2d9e39224c41a051671d84fe1dc

Fix will be in 42.3.