message: Don't set selectedKey when actionItem is clicked
diff: @@ -48,16 +48,20 @@ export class DropdownMixin extends React.PureComponent {
  e.preventDefault();
  e.stopPropagation();
  - const {onChange, noSelection, title} = this.props;
  + const { items, actionItem, onChange, noSelection, title } = this.props;
  if (onChange) {
  onChange(selectedKey, e);
  }
  + const newTitle = items[selectedKey];
  +
  + if (!actionItem || (selectedKey !== actionItem.actionKey)) {
  this.setState({
  selectedKey,
  - title: noSelection ? title : this.props.items[selectedKey],
  + title: noSelection ? title : newTitle,
  });
  + }
  this.hide();
  }
  @@ -421,8 +425,8 @@ export class Dropdown extends DropdownMixin {
  Dropdown.propTypes = {
  actionItem: PropTypes.shape({
  - key: PropTypes.string,
  - title: PropTypes.string,
  + actionKey: PropTypes.string,
  + actionTitle: PropTypes.string,
  }),
  autocompleteFilter: PropTypes.func,
  autocompletePlaceholder: PropTypes.string,
  