Refactor MQTT to replace get_mqtt_data with HassKey (#117899)

tests/components/mqtt_json/test_device_tracker.py

@@ -43,7 +43,7 @@ async def setup_comp(
 
 
 async def test_setup_fails_without_mqtt_being_setup(
-    hass: HomeAssistant, caplog: pytest.LogCaptureFixture
+    hass: HomeAssistant, mqtt_mock: MqttMockHAClient, caplog: pytest.LogCaptureFixture
 ) -> None:
     """Ensure mqtt is started when we setup the component."""
     # Simulate MQTT is was removed
@@ -52,6 +52,8 @@ async def test_setup_fails_without_mqtt_being_setup(
     await hass.config_entries.async_set_disabled_by(
         mqtt_entry.entry_id, ConfigEntryDisabler.USER
     )
+    # mqtt is mocked so we need to simulate it is not connected
+    mqtt_mock.connected = False
 
     dev_id = "zanzito"
     topic = "location/zanzito"