[8.x] [Security Solution] Document details flyout - fix session view …

…alerts error (#196422) (#196759)

# Backport

This will backport the following commits from `main` to `8.x`:
- [[Security Solution] Document details flyout - fix session view alerts
error (#196422)](#196422)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT
[{"author":{"name":"christineweng","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-10-17T18:26:57Z","message":"[Security
Solution] Document details flyout - fix session view alerts error
(#196422)\n\n## Summary\r\n\r\nRelated
https://github.com/elastic/kibana/issues/191582\r\n\r\nWe passed indices
to session viewer based on sourcerer scope. When user\r\nis in a
non-alert page, the alerts index is not available and hence\r\nsession
viewer throws an error when a user tries to open alert details.\r\nThis
PR updates indices to always be the alerts
indices.\r\n\r\n\r\nhttps://github.com/user-attachments/assets/264865f9-0bff-44f1-9dda-4bcd91eeab4a","sha":"89d833bf58ba614a0e9eb6a38a02c4eb5a641aeb","branchLabelMapping":{"^v9.0.0$":"main","^v8.17.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["backport","release_note:fix","v9.0.0","Team:Threat
Hunting","Team:Threat
Hunting:Investigations","v8.16.0"],"title":"[Security Solution] Document
details flyout - fix session view alerts
error","number":196422,"url":"https://github.com/elastic/kibana/pull/196422","mergeCommit":{"message":"[Security
Solution] Document details flyout - fix session view alerts error
(#196422)\n\n## Summary\r\n\r\nRelated
https://github.com/elastic/kibana/issues/191582\r\n\r\nWe passed indices
to session viewer based on sourcerer scope. When user\r\nis in a
non-alert page, the alerts index is not available and hence\r\nsession
viewer throws an error when a user tries to open alert details.\r\nThis
PR updates indices to always be the alerts
indices.\r\n\r\n\r\nhttps://github.com/user-attachments/assets/264865f9-0bff-44f1-9dda-4bcd91eeab4a","sha":"89d833bf58ba614a0e9eb6a38a02c4eb5a641aeb"}},"sourceBranch":"main","suggestedTargetBranches":["8.16"],"targetPullRequestStates":[{"branch":"main","label":"v9.0.0","branchLabelMappingKey":"^v9.0.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/196422","number":196422,"mergeCommit":{"message":"[Security
Solution] Document details flyout - fix session view alerts error
(#196422)\n\n## Summary\r\n\r\nRelated
https://github.com/elastic/kibana/issues/191582\r\n\r\nWe passed indices
to session viewer based on sourcerer scope. When user\r\nis in a
non-alert page, the alerts index is not available and hence\r\nsession
viewer throws an error when a user tries to open alert details.\r\nThis
PR updates indices to always be the alerts
indices.\r\n\r\n\r\nhttps://github.com/user-attachments/assets/264865f9-0bff-44f1-9dda-4bcd91eeab4a","sha":"89d833bf58ba614a0e9eb6a38a02c4eb5a641aeb"}},{"branch":"8.16","label":"v8.16.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

Co-authored-by: christineweng <[email protected]>

x-pack/plugins/security_solution/public/timelines/components/timeline/tabs/session/use_session_view.tsx

@@ -10,7 +10,6 @@ import { EuiButtonEmpty, EuiButtonIcon, EuiFlexGroup, EuiFlexItem, EuiToolTip }
 import styled from 'styled-components';
 import { useDispatch } from 'react-redux';
 import { dataTableSelectors, tableDefaults } from '@kbn/securitysolution-data-table';
-import type { TableId } from '@kbn/securitysolution-data-table';
 import { useExpandableFlyoutApi } from '@kbn/expandable-flyout';
 import { DocumentDetailsRightPanelKey } from '../../../../../flyout/document_details/shared/constants/panel_keys';
 import { useSourcererDataView } from '../../../../../sourcerer/containers';
@@ -32,7 +31,6 @@ import {
   useTimelineFullScreen,
   useGlobalFullScreen,
 } from '../../../../../common/containers/use_full_screen';
-import { detectionsTimelineIds } from '../../../../containers/helpers';
 import { useUserPrivileges } from '../../../../../common/components/user_privileges';
 import { timelineActions, timelineSelectors } from '../../../../store';
 import { timelineDefaults } from '../../../../store/defaults';
@@ -273,18 +271,8 @@ export const useSessionView = ({ scopeId, height }: { scopeId: string; height?:
     [globalFullScreen, scopeId, timelineFullScreen]
   );
 
-  const sourcererScope = useMemo(() => {
-    if (isActiveTimeline(scopeId)) {
-      return SourcererScopeName.timeline;
-    } else if (detectionsTimelineIds.includes(scopeId as TableId)) {
-      return SourcererScopeName.detections;
-    } else {
-      return SourcererScopeName.default;
-    }
-  }, [scopeId]);
-
-  const { selectedPatterns } = useSourcererDataView(sourcererScope);
-  const eventDetailsIndex = useMemo(() => selectedPatterns.join(','), [selectedPatterns]);
+  const { selectedPatterns } = useSourcererDataView(SourcererScopeName.detections);
+  const alertsIndex = useMemo(() => selectedPatterns.join(','), [selectedPatterns]);
 
   const { openFlyout } = useExpandableFlyoutApi();
   const openAlertDetailsFlyout = useCallback(
@@ -294,7 +282,7 @@ export const useSessionView = ({ scopeId, height }: { scopeId: string; height?:
           id: DocumentDetailsRightPanelKey,
           params: {
             id: eventId,
-            indexName: eventDetailsIndex,
+            indexName: alertsIndex,
             scopeId,
           },
         },
@@ -304,7 +292,7 @@ export const useSessionView = ({ scopeId, height }: { scopeId: string; height?:
         panel: 'right',
       });
     },
-    [openFlyout, eventDetailsIndex, scopeId, telemetry]
+    [openFlyout, alertsIndex, scopeId, telemetry]
   );
 
   const sessionViewComponent = useMemo(() => {