Fix: show AC input power of Huawei AC charger in live view

makes the value match its description. since most values in the top part
of the live view are related to the AC side of the system, it makes
sense to use the correct value rather than to change the description.

src/WebApi_ws_live.cpp

@@ -80,7 +80,7 @@ void WebApiWsLiveClass::generateOnBatteryJsonResponse(JsonVariant& root, bool al
 
         if (config.Huawei.Enabled) {
             const RectifierParameters_t * rp = HuaweiCan.get();
-            addTotalField(huaweiObj, "Power", rp->output_power, "W", 2);
+            addTotalField(huaweiObj, "Power", rp->input_power, "W", 2);
         }
 
         if (!all) { _lastPublishHuawei = millis(); }