Explicitly type cast to uint32_t to avoid ambiguity

.piolibdeps/esp32-test/ESPAsyncWebServer-esphome/src/AsyncWebSocket.cpp: In member function 'IPAddress AsyncWebSocketClient::remoteIP()':
.piolibdeps/esp32-test/ESPAsyncWebServer-esphome/src/AsyncWebSocket.cpp:832:29: error: call of overloaded 'IPAddress(long unsigned int)' is ambiguous
         return IPAddress(0UL);
                             ^
In file included from /root/.platformio/packages/framework-arduinoespressif32/cores/esp32/Arduino.h:163,
                 from .piolibdeps/esp32-test/ESPAsyncWebServer-esphome/src/AsyncWebSocket.cpp:21:
/root/.platformio/packages/framework-arduinoespressif32/cores/esp32/IPAddress.h:51:5: note: candidate: 'IPAddress::IPAddress(const uint8_t*)'
     IPAddress(const uint8_t *address);
     ^~~~~~~~~
/root/.platformio/packages/framework-arduinoespressif32/cores/esp32/IPAddress.h:50:5: note: candidate: 'IPAddress::IPAddress(uint32_t)'
     IPAddress(uint32_t address);
     ^~~~~~~~~

Author: agners

src/AsyncWebSocket.cpp

@@ -831,7 +831,7 @@ void AsyncWebSocketClient::binary(AsyncWebSocketMessageBuffer * buffer)
 
 IPAddress AsyncWebSocketClient::remoteIP() {
     if(!_client) {
-        return IPAddress(0U);
+        return IPAddress((uint32_t)0);
     }
     return _client->remoteIP();
 }