Fix zha light bugs (#20825)

homeassistant/components/zha/core/listeners.py

@@ -69,6 +69,8 @@ def decorate_command(listener, command):
                           "{}: {}".format("with args", args),
                           "{}: {}".format("with kwargs", kwds),
                           "{}: {}".format("and result", result))
+            if isinstance(result, bool):
+                return result
             return result[1] is Status.SUCCESS
         except DeliveryError:
             _LOGGER.debug("%s: command failed: %s", listener.unique_id,

homeassistant/components/zha/light.py

@@ -113,7 +113,7 @@ class Light(ZhaEntity, light.Light):
         """Set the brightness of this light between 0..255."""
         value = max(0, min(255, value))
         self._brightness = value
-        self.async_set_state(value)
+        self.async_schedule_update_ha_state()
 
     @property
     def hs_color(self):