Only run timer on unoccupied if lights are on

Also don't restart timer if it was already running.

packages/lighting_and_scenes.yaml

@@ -662,6 +662,16 @@ automation:
         - condition: trigger
           id: basement-unoccupied
         sequence:
+        - if:
+          - condition: state
+            entity_id: light.basement_studio_lights
+            state: 'on'
+          then:
+          - if:
+            - condition: state
+              entity_id: timer.basement_studio_door_timer
+              state: idle
+            then:
             - service: timer.start
               target:
                 entity_id: timer.basement_studio_door_timer