[Security Solution][Timeline] fix share alert not working with alert …

…details expandable flyout (#174005)

x-pack/plugins/security_solution/public/timelines/components/side_panel/event_details/expandable_event.tsx

@@ -24,6 +24,7 @@ import styled from 'styled-components';
 
 import { ALERT_WORKFLOW_ASSIGNEE_IDS } from '@kbn/rule-data-utils';
 import { TableId } from '@kbn/securitysolution-data-table';
+import { URL_PARAM_KEY } from '../../../../common/hooks/use_url_state';
 import type { GetFieldsData } from '../../../../common/hooks/use_get_fields_data';
 import { Assignees } from '../../../../flyout/document_details/right/components/assignees';
 import { useAssistantAvailability } from '../../../../assistant/use_assistant_availability';
@@ -107,6 +108,9 @@ export const ExpandableEventTitle = React.memo<ExpandableEventTitleProps>(
       _index: eventIndex,
       timestamp,
     });
+    const urlModifier = (value: string) => {
+      return `${value}&${URL_PARAM_KEY.eventFlyout}=(preview:!(),rightPanel:(id:document-details-right,params:(id:${eventId},indexName:${eventIndex},scopeId:${scopeId})))`;
+    };
 
     const { refetch } = useRefetchByScope({ scopeId });
     const alertAssignees = useMemo(
@@ -160,7 +164,7 @@ export const ExpandableEventTitle = React.memo<ExpandableEventTitleProps>(
                 )}
                 {isAlert && alertDetailsLink && (
                   <EuiFlexItem grow={false}>
-                    <EuiCopy textToCopy={alertDetailsLink}>
+                    <EuiCopy textToCopy={urlModifier(alertDetailsLink)}>
                       {(copy) => (
                         <EuiButtonEmpty
                           onClick={copy}