fix(unistyle_wt04_watertimer): use correct dp name for valve

Issue #3506

custom_components/tuya_local/devices/unistyle_wt04_watertimer.yaml

@@ -198,7 +198,7 @@ entities:
     dps:
       - id: 121
         type: boolean
-        name: switch
+        name: valve
       - id: 112
         type: base64
         optional: true