Powerworld PW59410: scale heating capacity and flow rate

Issue #1530

custom_components/tuya_local/devices/powerworld_pw58410_waterheater.yaml

@@ -499,6 +499,7 @@ secondary_entities:
                    000000000000000000000000000000000000000000000000\
                    000000000000000000000000000000000000000000000000\
                    0000000000000000"
+            scale: 10
   - entity: sensor
     class: volume_flow_rate
     category: diagnostic
@@ -513,6 +514,7 @@ secondary_entities:
                    000000000000000000000000000000000000000000000000\
                    000000000000000000000000000000000000000000000000\
                    0000000000000000"
+            scale: 10
   - entity: sensor
     class: current
     category: diagnostic