Correct related device-items count

Author: bouwew

tests/test_legacy_anna.py

@@ -30,7 +30,7 @@ async def test_connect_legacy_anna(self):
 
         await self.device_test(smile, "2020-03-22 00:00:01", testdata)
         assert smile.gateway_id == "0000aaaa0000aaaa0000aaaa0000aa00"
-        assert self.device_items == 40
+        assert self.device_items == 41
 
         result = await self.tinker_legacy_thermostat(smile, schedule_on=False)
         assert result