chore: revert x on linux closes app

app/window.cpp

@@ -302,12 +302,6 @@ void Window::closeEvent(QCloseEvent *event)
     }
 #endif
 
-#ifdef Q_OS_LINUX
-    event->accept();
-    quitApplication();
-    return;
-#endif
-
     if (m_trayIcon && m_trayIcon->isVisible()) {
         // Hide the window instead of closing
         hide();