message: Query Browser: Fix `undefined` error when sorting the results table
diff: @@ -582,7 +582,7 @@ export const QueryTable: React.FC<QueryTableProps> = ({ index, namespace }) => {
  const [error, setError] = React.useState<PrometheusAPIError>();
  const [page, setPage] = React.useState(1);
  const [perPage, setPerPage] = React.useState(50);
  - const [sortBy, setSortBy] = React.useState<ISortBy>();
  + const [sortBy, setSortBy] = React.useState<ISortBy>({});
  const isEnabled = useSelector(({ observe }: RootState) =>
  observe.getIn(['queryBrowser', 'queries', index, 'isEnabled']),
  @@ -624,7 +624,7 @@ export const QueryTable: React.FC<QueryTableProps> = ({ index, namespace }) => {
  setData(undefined);
  setError(undefined);
  setPage(1);
  - setSortBy(undefined);
  + setSortBy({});
  }, [namespace, query]);
  if (!isEnabled || !isExpanded || !query) {
  