message: Query Browser: Make series button width constant when data is loading
  This keeps the width of the table's first column constant regardless of
  whether the series data has finished loading or not.
diff: @@ -330,7 +330,7 @@ const SeriesButton_: React.FC<SeriesButtonProps> = ({
  toggleSeries,
  }) => {
  if (isSeriesEmpty) {
  - return null;
  + return <div className="query-browser__series-btn-wrap"></div>;
  }
  const title = `${isDisabled ? 'Show' : 'Hide'} series`;
  