message: Fix console warning in react in List component where items have icons
diff: @@ -52,13 +52,14 @@ export class List extends SurveyElementBase<IListProps, any> {
  if(!item.component) {
  const icon = item.iconName ? (
  <SvgIcon
  + key={1}
  className="sv-list__item-icon"
  iconName={item.iconName}
  size={24}
  ></SvgIcon>
  ) : null;
  content.push(icon);
  - content.push(<span>{item.title}</span>);
  + content.push(<span key={2}>{item.title}</span>);
  } else {
  content.push(ReactElementFactory.Instance.createElement(item.component, { item: item, }));
  }
  