Migrates AudioVideoManagement to generated rtiddsgen API

Converts accessor calls to plain member access across avm service and plugin.

qt6-after/qt6-migrated-legatus/Lts/Services/AudioVideoManagement/av_socket.cpp

@@ -104,7 +104,9 @@ void AVSocket::onConnectToAVS()
             this, &AVSocket::onDisconnected);
     connect(m_avsSocket, &QTcpSocket::connected,
             this, [this] {m_bErrorInTcpComWarnedOnce = false;});
-    connect(m_avsSocket, QOverload<QAbstractSocket::SocketError>::of(&QTcpSocket::error),
+    // Qt6: QAbstractSocket::error() (the getter/signal overload pair) was
+    // replaced by the errorOccurred signal.
+    connect(m_avsSocket, &QAbstractSocket::errorOccurred,
             this, &AVSocket::onError);
     connect(m_avsSocket, &QTcpSocket::readyRead,
             this, &AVSocket::onReadyRead);