fix(src/app/App): use `showNormal` instead of `setVisible`

linphone-desktop/src/app/App.cpp

@@ -147,7 +147,7 @@ void App::initContentApp () {
   #endif // ifndef __APPLE__
 
   if (!m_parser.isSet("iconified"))
-    getMainWindow()->setVisible(true);
+    getMainWindow()->showNormal();
 
   if (m_parser.isSet("selftest"))
     QTimer::singleShot(300, this, &App::quit);

linphone-desktop/ui/views/App/Main/MainWindow.qml

@@ -94,7 +94,6 @@ Controls1.ApplicationWindow {
   width: MainWindowStyle.width
 
   title: MainWindowStyle.title
-  visible: false
 
   // ---------------------------------------------------------------------------
   // Menu bar.