🐛 [DropDownButton] `closeAfterClick` at item level is ignored

[Nico04]

Setting closeAfterClick at MenuFlyoutItem level doesn't work, only at DropDownButton.

This part of the code looks involved :

  MenuFlyoutItem _createMenuItem(MenuFlyoutItem item, BuildContext context) {
    return MenuFlyoutItem(
      onPressed: item.onPressed,
      closeAfterClick: widget.closeAfterClick,
      key: item.key,
      leading: item.leading,
      text: item.text,
      trailing: item.trailing,
      selected: item.selected,
    );
  }

It may be changed to this :

  MenuFlyoutItem _createMenuItem(MenuFlyoutItem item, BuildContext context) {
    return MenuFlyoutItem(
      onPressed: item.onPressed,
      closeAfterClick: item.closeAfterClick ?? widget.closeAfterClick,
      key: item.key,
      leading: item.leading,
      text: item.text,
      trailing: item.trailing,
      selected: item.selected,
    );
  }

And change item.closeAfterClick to be nullable.