fix a missing sensor error on restart

apps/global/presence.yaml

@@ -33,6 +33,9 @@ occupancy_sensors:
   class: VirtualSensorsApp
   priority: 8 # default priority app is 50, since most of them require sensors created by virtual sensors, it's important that virtual_sensors start first
 
+  default_values:
+      binary_sensor.someone_home: off
+
   sensors:
     binary_sensor.living_room_occupancy:
       trigger_conditions: sensor.living_room_last_motion <= 5