### 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 (config_name.length() == 0) {
				class_str = "Godot_Engine";
			} else {
				class_str = config_name.utf8();
			}
		} else {
			class_str = "Godot";
		}
		classHint->res_class = class_str.ptrw();
		classHint->res_name = name_str.ptrw();
		XSetClassHint(x11_display, wd.x11_window, classHint);
		XFree(classHint);
	}
}
void DisplayServerX11::set_context(Context p_context) {
	_THREAD_SAFE_METHOD_
	context = p_context;
	for (KeyValue<WindowID, WindowData> &E : windows) {
		_update_context(E.value);
	}
}
void DisplayServerX11::set_native_icon(const String &p_filename) {
	WARN_PRINT("Native icon not supported by this display server.");
}
bool g_set_icon_error = false;
int set_icon_errorhandler(Display *dpy, XErrorEvent *ev) {
	g_set_icon_error = true;
	return 0;
}
void DisplayServerX11::set_icon(const Ref<Image> &p_icon) {