Fix automations listening to HOMEASSISTANT_START (#6936)

* Fire EVENT_HOMEASSISTANT_START automations off right away while starting

* Actually have core state be set to 'starting' during boot

* Fix correct start implementation

* Test and deprecate event automation platform on start

* Fix doc strings

* Remove shutting down exception

* More strict when to mark an instance as finished

* Add automation platform to listen for start/shutdown

* When we stop we should wait till it's all done

* Fix testing

* Fix async bugs in tests

* Only set UVLOOP when hass starts from CLI

* This hangs normal asyncio event loop

* Clean up Z-Wave node entity test

homeassistant/components/light/litejet.py

@@ -48,7 +48,7 @@ class LiteJetLight(Light):
     def _on_load_changed(self):
         """Called on a LiteJet thread when a load's state changes."""
         _LOGGER.debug("Updating due to notification for %s", self._name)
-        self._hass.async_add_job(self.async_update_ha_state(True))
+        self.schedule_update_ha_state(True)
 
     @property
     def supported_features(self):