update uv entity name and icon

custom_components/tuya_local/devices/soleusair_air_purifier.yaml

@@ -73,8 +73,9 @@ secondary_entities:
           - dps_val: true
             icon: "mdi:hand-back-right-off"
   - entity: switch
-    name: UV
+    name: UV sterilization
     category: config
+    icon: "mdi:solar-power"
     dps:
       - id: 9
         type: boolean