Fix mode=off testcase, must be heat

Author: bouwew

tests/test_smile.py

@@ -1643,7 +1643,7 @@ async def test_connect_adam_multiple_devices_per_zone(self):
                 "selected_schedule": "None",
                 "schedule_temperature": 15.0,
                 "last_used": "Badkamer Schema",
-                "mode": "off",
+                "mode": "heat",
                 "sensors": {"temperature": 16.5, "setpoint": 13.0, "battery": 67},
             },
             "b310b72a0e354bfab43089919b9a88bf": {