updating snapshot and adding null check on associated detectors (opensearch-project#789)

Signed-off-by: Amit Galitzky <amgalitz@amazon.com>

Author: amitgalitz

public/components/FeatureAnywhereContextMenu/AssociatedDetectors/containers/AssociatedDetectors.tsx

@@ -77,7 +77,7 @@ function AssociatedDetectors({ embeddable, closeFlyout, setMode }) {
     (state: AppState) => state.ad.errorMessage
   );
   const embeddableTitle = embeddable.getTitle();
-  const indexPatternId = embeddable.vis.data.aggs.indexPattern.id;
+  const indexPatternId = embeddable.vis.data.aggs != null ? embeddable.vis.data.aggs.indexPattern.id : "";
   const [dataSourceId, setDataSourceId] = useState<string | undefined>(undefined);
 
   async function getDataSourceId() {

public/pages/DefineDetector/containers/__tests__/__snapshots__/DefineDetector.test.tsx.snap

@@ -528,11 +528,11 @@ exports[`<DefineDetector /> Full creating detector definition renders the compon
                       data-test-subj="comboBoxInput"
                       tabindex="-1"
                     >
-                      <p
-                        class="euiComboBoxPlaceholder"
+                      <span
+                        class="euiComboBoxPill euiComboBoxPill--plainText"
                       >
-                        Find timestamp
-                      </p>
+                        timestamp
+                      </span>
                       <div
                         class="euiComboBox__input"
                         style="font-size: 14px; display: inline-block;"