[Security Solution] Fix flyout history flickering (#211662)

## Summary

This PR fixed a flickering issue in flyout history

**Before**
`Event details` is shown and then replaced by actual alert title


https://github.com/user-attachments/assets/edb1e6eb-c290-4cdc-a5f9-3f270a26a58b

**After**
Show a loading skeleton text while fetching rule name


![image](https://github.com/user-attachments/assets/eb20892d-7bbc-4687-bf11-a9cbc65288d3)


### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [x] The PR description includes the appropriate Release Notes section,
and the correct `release_note:*` label is applied per the
[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

x-pack/solutions/security/plugins/security_solution/public/flyout/shared/components/flyout_history_row.test.tsx

@@ -22,6 +22,7 @@ import {
 } from '@kbn/expandable-flyout';
 import { useRuleDetails } from '../../rule_details/hooks/use_rule_details';
 import { useBasicDataFromDetailsData } from '../../document_details/shared/hooks/use_basic_data_from_details_data';
+import { useEventDetails } from '../../document_details/shared/hooks/use_event_details';
 import { DocumentDetailsRightPanelKey } from '../../document_details/shared/constants/panel_keys';
 import { RulePanelKey } from '../../rule_details/right';
 import { NetworkPanelKey } from '../../network_details';
@@ -32,6 +33,7 @@ import {
   NETWORK_HISTORY_ROW_TEST_ID,
   RULE_HISTORY_ROW_TEST_ID,
   USER_HISTORY_ROW_TEST_ID,
+  HISTORY_ROW_LOADING_TEST_ID,
 } from './test_ids';
 import { HostPanelKey, UserPanelKey } from '../../entity_details/shared/constants';
 
@@ -45,6 +47,7 @@ jest.mock('@kbn/expandable-flyout', () => ({
 jest.mock('../../../detection_engine/rule_management/logic/use_rule_with_fallback');
 jest.mock('../../document_details/shared/hooks/use_basic_data_from_details_data');
 jest.mock('../../rule_details/hooks/use_rule_details');
+jest.mock('../../document_details/shared/hooks/use_event_details');
 
 const flyoutContextValue = {
   openFlyout: jest.fn(),
@@ -112,6 +115,12 @@ describe('FlyoutHistoryRow', () => {
     jest.mocked(useRuleDetails).mockReturnValue({
       ...mockedRuleResponse,
       rule: { name: 'rule name' } as RuleResponse,
+      loading: false,
+    });
+    (useEventDetails as jest.Mock).mockReturnValue({
+      dataFormattedForFieldBrowser: {},
+      getFieldsData: jest.fn(),
+      loading: false,
     });
     (useBasicDataFromDetailsData as jest.Mock).mockReturnValue({ isAlert: false });
   });
@@ -182,6 +191,11 @@ describe('FlyoutHistoryRow', () => {
 describe('DocumentDetailsHistoryRow', () => {
   beforeEach(() => {
     jest.mocked(useExpandableFlyoutApi).mockReturnValue(flyoutContextValue);
+    (useEventDetails as jest.Mock).mockReturnValue({
+      dataFormattedForFieldBrowser: {},
+      getFieldsData: jest.fn(),
+      loading: false,
+    });
   });
 
   it('should render alert title when isAlert is true and rule name is defined', () => {
@@ -291,6 +305,22 @@ describe('GenericHistoryRow', () => {
     fireEvent.click(getByTestId(`${0}-${GENERIC_HISTORY_ROW_TEST_ID}`));
   });
 
+  it('should render empty context menu item when isLoading is true', () => {
+    const { getByTestId } = render(
+      <TestProviders>
+        <GenericHistoryRow
+          item={rowItems.host}
+          name="Row name"
+          icon={'user'}
+          title="title"
+          index={0}
+          isLoading
+        />
+      </TestProviders>
+    );
+    expect(getByTestId(HISTORY_ROW_LOADING_TEST_ID)).toBeInTheDocument();
+  });
+
   it('should open the flyout when clicked', () => {
     const { getByTestId } = render(
       <TestProviders>

x-pack/solutions/security/plugins/security_solution/public/flyout/shared/components/flyout_history_row.tsx

@@ -14,6 +14,7 @@ import {
   EuiFlexItem,
   type EuiIconProps,
   useEuiTheme,
+  EuiSkeletonText,
 } from '@elastic/eui';
 import type { FlyoutPanelHistory } from '@kbn/expandable-flyout';
 import { useExpandableFlyoutApi } from '@kbn/expandable-flyout';
@@ -32,6 +33,7 @@ import {
   NETWORK_HISTORY_ROW_TEST_ID,
   RULE_HISTORY_ROW_TEST_ID,
   USER_HISTORY_ROW_TEST_ID,
+  HISTORY_ROW_LOADING_TEST_ID,
 } from './test_ids';
 import { HostPanelKey, UserPanelKey } from '../../entity_details/shared/constants';
 
@@ -99,7 +101,7 @@ export const FlyoutHistoryRow: FC<FlyoutHistoryRowProps> = memo(({ item, index }
  * Row item for a document details
  */
 export const DocumentDetailsHistoryRow: FC<FlyoutHistoryRowProps> = memo(({ item, index }) => {
-  const { dataFormattedForFieldBrowser, getFieldsData } = useEventDetails({
+  const { dataFormattedForFieldBrowser, getFieldsData, loading } = useEventDetails({
     eventId: String(item?.panel?.params?.id),
     indexName: String(item?.panel?.params?.indexName),
   });
@@ -122,6 +124,7 @@ export const DocumentDetailsHistoryRow: FC<FlyoutHistoryRowProps> = memo(({ item
       title={title}
       icon={isAlert ? 'warning' : 'analyzeEvent'}
       name={isAlert ? 'Alert' : 'Event'}
+      isLoading={loading}
       dataTestSubj={DOCUMENT_DETAILS_HISTORY_ROW_TEST_ID}
     />
   );
@@ -171,7 +174,7 @@ const RowTitle: FC<RowTitleProps> = memo(({ type, value }) => {
  */
 export const RuleHistoryRow: FC<FlyoutHistoryRowProps> = memo(({ item, index }) => {
   const ruleId = String(item?.panel?.params?.ruleId);
-  const { rule } = useRuleDetails({ ruleId });
+  const { rule, loading } = useRuleDetails({ ruleId });
 
   return (
     <GenericHistoryRow
@@ -180,6 +183,7 @@ export const RuleHistoryRow: FC<FlyoutHistoryRowProps> = memo(({ item, index })
       title={rule?.name ?? ''}
       icon={'indexSettings'}
       name={'Rule'}
+      isLoading={loading}
       dataTestSubj={RULE_HISTORY_ROW_TEST_ID}
     />
   );
@@ -202,6 +206,10 @@ interface GenericHistoryRowProps extends FlyoutHistoryRowProps {
    * Name to display
    */
   name: string;
+  /**
+   * Whether the row is loading
+   */
+  isLoading?: boolean;
   /**
    * Data test subject
    */
@@ -212,13 +220,21 @@ interface GenericHistoryRowProps extends FlyoutHistoryRowProps {
  * Row item for a generic history row where the title is accessible in flyout params
  */
 export const GenericHistoryRow: FC<GenericHistoryRowProps> = memo(
-  ({ item, index, title, icon, name, dataTestSubj }) => {
+  ({ item, index, title, icon, name, isLoading, dataTestSubj }) => {
     const { euiTheme } = useEuiTheme();
     const { openFlyout } = useExpandableFlyoutApi();
     const onClick = useCallback(() => {
       openFlyout({ right: item.panel });
     }, [openFlyout, item.panel]);
 
+    if (isLoading) {
+      return (
+        <EuiContextMenuItem key={index} data-test-subj={HISTORY_ROW_LOADING_TEST_ID}>
+          <EuiSkeletonText lines={1} isLoading size="s" />
+        </EuiContextMenuItem>
+      );
+    }
+
     return (
       <EuiContextMenuItem
         key={index}

x-pack/solutions/security/plugins/security_solution/public/flyout/shared/components/test_ids.ts

@@ -41,6 +41,7 @@ export const TITLE_LINK_ICON_TEST_ID = (dataTestSubj: string) => `${dataTestSubj
 
 /* History */
 export const FLYOUT_HISTORY_TEST_ID = `${PREFIX}History` as const;
+export const HISTORY_ROW_LOADING_TEST_ID = `${FLYOUT_HISTORY_TEST_ID}RowLoading` as const;
 export const FLYOUT_HISTORY_BUTTON_TEST_ID = `${FLYOUT_HISTORY_TEST_ID}Button` as const;
 export const FLYOUT_HISTORY_CONTEXT_PANEL_TEST_ID =
   `${FLYOUT_HISTORY_TEST_ID}ContextPanel` as const;