MQTT breaking changes fix

According to the docs firs we have to use `async_prepare_subscribe_topics` in the same way as `async_prepare_subscribe_topics` before, then we have to call `async_prepare_subscribe_topics` in order to perform the subscription.

custom_components/tasmota_irhvac/climate.py

@@ -652,7 +652,7 @@ async def state_message_received(msg):
                     state = self.hass.states.get(self._power_sensor)
                     await self._async_power_sensor_changed(self._power_sensor, None, state)
 
-        self._sub_state = await mqtt.subscription.async_subscribe_topics(
+        self._sub_state = mqtt.subscription.async_prepare_subscribe_topics(
             self.hass,
             self._sub_state,
             {
@@ -664,6 +664,11 @@ async def state_message_received(msg):
             },
         )
 
+        self._sub_state = await mqtt.subscription.async_subscribe_topics(
+            self.hass,
+            self._sub_state
+        )
+
     async def async_will_remove_from_hass(self):
         """Unsubscribe when removed."""
         self._sub_state = await mqtt.subscription.async_unsubscribe_topics(