fix(stasis): declare the suspend inhibit knobs

stasis 1.5.1 discards any config missing a knob its own template carries,
backs it up and starts over from that template, so the timeouts here never
took effect. Both lists are empty on purpose.

defaults/xdg/stasis/stasis.rune

@@ -15,6 +15,13 @@ default:
   monitor_media true
   ignore_remote_media false
 
+  # Both empty on purpose: nothing here should keep the machine awake beyond
+  # what inhibit_apps already covers. They are set rather than omitted because
+  # stasis discards any config missing a knob its own template carries, backing
+  # it up and starting over from that template.
+  suspend_inhibit_apps [ ]
+  suspend_inhibit_media [ ]
+
   # App/process inhibit patterns (apps that don't use D-Bus idle-inhibit)
   inhibit_apps [
     "vlc"