### 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(p_idx, items.size());
	
	if (items[p_idx]._ofs_cache - scroll_container->get_v_scroll() < -control->get_position().y) {
		scroll_container->set_v_scroll(items[p_idx]._ofs_cache + control->get_position().y);
	}
	
	if (items[p_idx]._ofs_cache + items[p_idx]._height_cache - scroll_container->get_v_scroll() > -control->get_position().y + scroll_container->get_size().height) {
		scroll_container->set_v_scroll(items[p_idx]._ofs_cache + items[p_idx]._height_cache + control->get_position().y);
	}
}
bool PopupMenu::activate_item_by_event(const Ref<InputEvent> &p_event, bool p_for_global_only) {
	Key code = Key::NONE;
	Ref<InputEventKey> k = p_event;
	if (k.is_valid()) {
		code = k->get_keycode();
		if (code == Key::NONE) {
			code = (Key)k->get_unicode();
		}
		if (k->is_ctrl_pressed()) {
			code |= KeyModifierMask::CTRL;
		}
		if (k->is_alt_pressed()) {
			code |= KeyModifierMask::ALT;
		}
		if (k->is_meta_pressed()) {
			code |= KeyModifierMask::META;
		}
		if (k->is_shift_pressed()) {
			code |= KeyModifierMask::SHIFT;
		}