message: fix: className prop type in Box
diff: @@ -30,10 +30,7 @@ Box.propTypes = {
  className: PropTypes.oneOfType([
  PropTypes.string,
  PropTypes.func,
  - PropTypes.arrayOf(PropTypes.oneOfType([
  - PropTypes.string,
  - PropTypes.func,
  - ])),
  + PropTypes.array,
  ]),
  style: PropTypes.object,
  componentClassName: PropTypes.string,
  