Ensure SDDM never tries to start an x11 session, just go straight to wayland

Closes #5643

migrations/1778148645.sh

@@ -0,0 +1,10 @@
+echo "Configure SDDM to use Wayland for the greeter"
+
+sudo mkdir -p /etc/sddm.conf.d
+cat <<EOF | sudo tee /etc/sddm.conf.d/10-wayland.conf >/dev/null
+[General]
+DisplayServer=wayland
+
+[Wayland]
+CompositorCommand=Hyprland
+EOF