Fix for 0.98: Don't update disabled entities (Homematic IP Cloud) (#26236)

* Homematic IP Cloud Fix: Don't update disabled entities

* Added enabled to entity.py

* Update test for enabled

* Update entity.py

homeassistant/helpers/entity.py

@@ -229,6 +229,11 @@ class Entity:
     # are used to perform a very specific function. Overwriting these may
     # produce undesirable effects in the entity's operation.
 
+    @property
+    def enabled(self):
+        """Return if the entity is enabled in the entity registry."""
+        return self.registry_entry is None or not self.registry_entry.disabled
+
     @callback
     def async_set_context(self, context):
         """Set the context the entity currently operates under."""