Remora Heatpump: change icon when in an error state and the device is on.

Similar to tank full indication on dehumidifier, it can help draw attention to
the abnormal state if the icon is changed.

custom_components/tuya_local/devices/remora_heatpump.yaml

@@ -48,3 +48,5 @@ primary_entity:
           value: "OK"
         - dps_val: 1
           value: "Water Flow Protection"
+          icon: "mdi:water-pump-off"
+          icon_priority: 2