Avoid expensive inspection of callbacks to setup mqtt subscriptions (#118161)

homeassistant/components/mqtt/sensor.py

@@ -31,7 +31,13 @@ from homeassistant.const import (
     STATE_UNAVAILABLE,
     STATE_UNKNOWN,
 )
-from homeassistant.core import CALLBACK_TYPE, HomeAssistant, State, callback
+from homeassistant.core import (
+    CALLBACK_TYPE,
+    HassJobType,
+    HomeAssistant,
+    State,
+    callback,
+)
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.event import async_call_later
@@ -297,6 +303,7 @@ class MqttSensor(MqttEntity, RestoreSensor):
             "entity_id": self.entity_id,
             "qos": self._config[CONF_QOS],
             "encoding": self._config[CONF_ENCODING] or None,
+            "job_type": HassJobType.Callback,
         }
 
         self._sub_state = subscription.async_prepare_subscribe_topics(