Chanfok fan light: make the unknown dp 101 optional.

It seems that this is probably what prevents the device from PR #2068
from being detected correctly.

custom_components/tuya_local/devices/chanfok_fan_light.yaml

@@ -29,6 +29,7 @@ primary_entity:
     - id: 101
       type: boolean
       name: unknown_101
+      optional: true
 secondary_entities:
   - entity: light
     dps: