### Godot version

2992ffd25523cb8b3e0ef1b873c40115b8940178

### System information

Windows 10

### Issue description

Godot crashes randomly within a few seconds after project start when moving with the mouse.

![win_err](https://github.com/godotengine/godot/assets/52464204/1da28596-d95b-40f3-b32f-12219ec02c5d)

Started after recent merge of https://github.com/godotengine/godot/pull/67791.
I can confirm that reverting the pr fixes the crashes.

### Steps to reproduce

see desc

### Minimal reproduction project

N/A
if (screen_is_kept_on() == p_enable) {
		return;
	}
	if (p_enable) {
		screensaver->inhibit();
	} else {
		screensaver->uninhibit();
	}
	keep_screen_on = p_enable;
}
bool DisplayServerX11::screen_is_kept_on() const {
	return keep_screen_on;
}
#endif
Vector<DisplayServer::WindowID> DisplayServerX11::get_window_list() const {
	_THREAD_SAFE_METHOD_
	Vector<int> ret;
	for (const KeyValue<WindowID, WindowData> &E : windows) {
		ret.push_back(E.key);
	}
	return ret;
}
DisplayServer::WindowID DisplayServerX11::create_sub_window(WindowMode p_mode, VSyncMode p_vsync_mode, uint32_t p_flags, const Rect2i &p_rect) {