feat: (rainpoint_water_timer): add local product id

Issue #5778

custom_components/tuya_local/devices/rainpoint_water_timer.yaml

@@ -3,6 +3,9 @@ products:
   - id: ew946yrp3pgbaziu
     manufacturer: RainPoint
     model: TTV103FRF
+  - id: keyth3n5me5jqu95
+    manufacturer: RainPoint
+    model: TTV103FRF
 entities:
   - entity: valve
     class: water