ui: fix wayland requestActivate warning on device (#33054)

fix wayland requestActivate warning in fullscreen mode

selfdrive/ui/qt/qt_window.cc

@@ -18,7 +18,9 @@ void setMainWindow(QWidget *w) {
   wl_surface *s = reinterpret_cast<wl_surface*>(native->nativeResourceForWindow("surface", w->windowHandle()));
   wl_surface_set_buffer_transform(s, WL_OUTPUT_TRANSFORM_270);
   wl_surface_commit(s);
-  w->showFullScreen();
+
+  w->setWindowState(Qt::WindowFullScreen);
+  w->setVisible(true);
 
   // ensure we have a valid eglDisplay, otherwise the ui will silently fail
   void *egl = native->nativeResourceForWindow("egldisplay", w->windowHandle());