Kogan bidet: fix water temperature entity.

Number needs value, not option (due to changing from select to number to get
a slider in the UI rather than a select box)

#559

custom_components/tuya_local/devices/kogan_bidet.yaml

@@ -53,7 +53,7 @@ secondary_entities:
     dps:
       - id: 52
         type: string
-        name: option
+        name: value
         range:
           min: 1
           max: 4