message: Set datasource panel open by default
diff: @@ -158,7 +158,7 @@ function ExploreViewContainer(props) {
  const [showingModal, setShowingModal] = useState(false);
  const [chartIsStale, setChartIsStale] = useState(false);
  - const [isCollapsed, setIsCollapsed] = useState(true);
  + const [isCollapsed, setIsCollapsed] = useState(false);
  const width = `${windowSize.width}px`;
  const navHeight = props.standalone ? 0 : 90;
  