### 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 (ime_window_event) {
					break;
				}
				if (!mouse_mode_grab) {
					_send_window_event(windows[window_id], WINDOW_EVENT_MOUSE_ENTER);
				}
			} break;
			case FocusIn: {
				DEBUG_LOG_X11("[%u] FocusIn window=%lu (%u), mode='%u' \n", frame, event.xfocus.window, window_id, event.xfocus.mode);
				if (ime_window_event || (event.xfocus.detail == NotifyInferior)) {
					break;
				}
				WindowData &wd = windows[window_id];
				last_focused_window = window_id;
				wd.focused = true;
				
				static unsigned int focus_order = 0;
				wd.focus_order = ++focus_order;
				_send_window_event(wd, WINDOW_EVENT_FOCUS_IN);
				if (mouse_mode_grab) {
					
					for (const KeyValue<WindowID, WindowData> &E : windows) {
						if (mouse_mode == MOUSE_MODE_CONFINED) {
							XUndefineCursor(x11_display, E.value.x11_window);
						} else if (mouse_mode == MOUSE_MODE_CAPTURED || mouse_mode == MOUSE_MODE_CONFINED_HIDDEN) { 
							XDefineCursor(x11_display, E.value.x11_window, null_cursor);
						}
						XGrabPointer(
								x11_display, E.value.x11_window, True,
								ButtonPressMask | ButtonReleaseMask | PointerMotionMask,