### Godot version

4.0.2

### System information

Windows 11

### Issue description

Changing node type from PopupMenu to ItemList causes Godot to crash

### Steps to reproduce

Change node type from PopupMenu to ItemList

### Minimal reproduction project

n/a
ERR_FAIL_INDEX_V(p_idx, items.size(), false);
	return items[p_idx].checkable_type;
}
bool PopupMenu::is_item_radio_checkable(int p_idx) const {
	ERR_FAIL_INDEX_V(p_idx, items.size(), false);
	return items[p_idx].checkable_type == Item::CHECKABLE_TYPE_RADIO_BUTTON;
}
bool PopupMenu::is_item_shortcut_global(int p_idx) const {
	ERR_FAIL_INDEX_V(p_idx, items.size(), false);
	return items[p_idx].shortcut_is_global;
}
bool PopupMenu::is_item_shortcut_disabled(int p_idx) const {
	ERR_FAIL_INDEX_V(p_idx, items.size(), false);
	return items[p_idx].shortcut_is_disabled;
}
void PopupMenu::set_focused_item(int p_idx) {
	if (p_idx != -1) {
		ERR_FAIL_INDEX(p_idx, items.size());
	}
	if (mouse_over == p_idx) {
		return;
	}
	mouse_over = p_idx;
	if (mouse_over != -1) {
		scroll_to_item(mouse_over);
	}
	control->queue_redraw();
}
int PopupMenu::get_focused_item() const {