fix: stop attribute updates when not_home

Previously the timestamp was continuously updated even though no change
happened while a device was not_home. As no change happened, there is no
point in always pushing a new timestamp.

Closes #113

src/integrations/room-presence/room-presence-distance.sensor.spec.ts

@@ -138,4 +138,11 @@ describe('RoomPresenceDistanceSensor', () => {
     expect(sensor.state).toBe(STATE_NOT_HOME);
     expect(sensor.attributes.distance).toBeUndefined();
   });
+
+  it('should stop sending attribute updates after not_home has been set', () => {
+    sensor.state = STATE_NOT_HOME;
+    sensor.handleNewDistance('room1', 10, true);
+
+    expect(sensor.attributes.lastUpdatedAt).toBeUndefined();
+  });
 });

src/integrations/room-presence/room-presence-distance.sensor.ts

@@ -53,7 +53,7 @@ export class RoomPresenceDistanceSensor extends Sensor {
         this.attributes.distance = closestInRange[1].distance;
         this.attributes.lastUpdatedAt = closestInRange[1].lastUpdatedAt.toISOString();
       }
-    } else {
+    } else if (this.state !== STATE_NOT_HOME) {
       this.setNotHome();
     }
   }