fix a mds bug that could cause dataSourceId to not show in the url on Overview landing page (opensearch-project#828)

Signed-off-by: Jackie Han <jkhanjob@gmail.com>

Author: jackiehanyang

public/pages/Overview/containers/AnomalyDetectionOverview.tsx

@@ -121,7 +121,7 @@ export function AnomalyDetectionOverview(props: AnomalyDetectionOverviewProps) {
   // Getting all initial sample detectors & indices
   useEffect(() => {
     const { history, location } = props;
-    if (dataSourceEnabled && props.landingDataSourceId !== undefined) {
+    if (dataSourceEnabled) {
       const updatedParams = {
         dataSourceId: MDSOverviewState.selectedDataSourceId,
       };