cleanup (minib_public_litterbox): use standard factory reset button pattern

custom_components/tuya_local/devices/minib_public_litterbox.yaml

@@ -92,8 +92,9 @@ entities:
         name: button
 
   - entity: button
-    name: Reset
+    translation_key: factory_reset
     category: config
+    hidden: true
     dps:
       - id: 23
         type: boolean