fix(comon_lights): allow effect to be switched off

custom_components/tuya_local/devices/comon_lights.yaml

@@ -13,6 +13,8 @@ entities:
         type: string
         name: effect
         mapping:
+          - dps_val: white
+            value: "off"
           - dps_val: scene
             value: Scene
           - dps_val: music