* HA MQTT autodiscovery topic update
Add `default_entity_id` to the HA autodiscovery payload to address a deprecation (warning starting with HA 2025.11 and causing an error starting with HA 2026.4).
If desired, the `object_id` (line 107) can be removed after April 2026.
* Fix whitespace
* Whitespace again
* Whitespace final