Fix scale of sanden energy sensor

Fixes bug #2355

custom_components/tuya_local/devices/sanden_gaua45hpd_heatpumpcontroller.yaml

@@ -317,6 +317,8 @@ secondary_entities:
         name: sensor
         unit: kWh
         class: total_increasing
+        mapping:
+          - scale: 10
   - entity: number
     name: Password
     category: config