### Godot version

4 rc6

### System information

Windows 11, Vulkan, ryzen 9 5900X, rx 6700xt

### Issue description

If you export an array and then add a resource to the array, the scrollbar for the create resource drop down doesn't work.

A workaround would be to scroll with the mouse wheel, but it's still an issue and the list can get quite long, which can make mouse wheel scrolling tedious. 

### Steps to reproduce

1. Export an array (for example `@export var test: Array = []`)
2. Create a new element
3. Right click in the `<empty>` field
4. Try to use the scroll bar (it won't work)

### Minimal reproduction project

See "Steps to reproduce"
_THREAD_SAFE_METHOD_
	bool has_popup_ancestor = false;
	WindowID transient_root = p_window;
	while (true) {
		WindowID parent = windows[transient_root].transient_parent;
		if (parent == INVALID_WINDOW_ID) {
			break;
		} else {
			transient_root = parent;
			if (windows[parent].is_popup) {
				has_popup_ancestor = true;
				break;
			}
		}
	}
	WindowData &wd = windows[p_window];
	if (wd.is_popup || has_popup_ancestor) {
		
		List<WindowID>::Element *C = nullptr;
		List<WindowID>::Element *E = popup_list.back();
		while (E) {
			if (wd.transient_parent != E->get() || wd.transient_parent == INVALID_WINDOW_ID) {
				C = E;
				E = E->prev();
			} else {
				break;
			}
		}
		if (C) {