Fix losing the positioning button on the lower right corner.

setValid( true ) on constructor

src/core/positioning/egenioussreceiver.cpp

@@ -11,6 +11,7 @@ EgenioussReceiver::EgenioussReceiver( QObject *parent )
  connect( mTcpSocket, &QTcpSocket::errorOccurred, this, &EgenioussReceiver::handleError );
  connect( mTcpSocket, &QTcpSocket::connected, this, &EgenioussReceiver::connected );
  connect( mTcpSocket, &QTcpSocket::disconnected, this, &EgenioussReceiver::disconnected );
+ setValid( true );
 }
 
 void EgenioussReceiver::handleConnectDevice()