[Discover Session] Fix "Untitled" export title when exporting CSV on a dashboard (#210143)

- Fixes "Untitled" CSV exports when an export of a Discover session CSV is triggered on a Dashboard
- Switches to make use of the embeddable title when exporting CSV of Discover session embeddables on a Dashboard.

src/platform/packages/private/kbn-reporting/get_csv_panel_actions/panel_actions/get_csv_panel_action.test.ts

@@ -93,7 +93,6 @@ describe('GetCsvReportPanelAction', () => {
       embeddable: {
         type: 'search',
         savedSearch$: new BehaviorSubject({ searchSource: mockSearchSource }),
-        getTitle: () => `The Dude`,
         getInspectorAdapters: () => null,
         getInput: () => ({
           viewMode: 'list',
@@ -103,6 +102,8 @@ describe('GetCsvReportPanelAction', () => {
           },
         }),
         hasTimeRange: () => true,
+        title$: new BehaviorSubject('embeddable title'),
+        hideTitle$: new BehaviorSubject(false),
         parentApi: {
           viewMode$: new BehaviorSubject('view'),
         },
@@ -131,7 +132,7 @@ describe('GetCsvReportPanelAction', () => {
       columns: [],
       objectType: 'search',
       searchSource: {},
-      title: '',
+      title: 'embeddable title',
       version: '7.15.0',
     });
   });
@@ -165,7 +166,7 @@ describe('GetCsvReportPanelAction', () => {
       columns: ['column_a', 'column_b'],
       objectType: 'search',
       searchSource: { testData: 'testDataValue' },
-      title: '',
+      title: 'embeddable title',
       version: '7.15.0',
     });
   });
@@ -183,7 +184,7 @@ describe('GetCsvReportPanelAction', () => {
     await panel.execute(context);
 
     expect(core.http.post).toHaveBeenCalledWith('/internal/reporting/generate/csv_searchsource', {
-      body: '{"jobParams":"(columns:!(),objectType:search,searchSource:(),title:\'\',version:\'7.15.0\')"}',
+      body: '{"jobParams":"(columns:!(),objectType:search,searchSource:(),title:\'embeddable title\',version:\'7.15.0\')"}',
       method: 'POST',
     });
   });

src/platform/packages/private/kbn-reporting/get_csv_panel_actions/panel_actions/get_csv_panel_action.tsx

@@ -30,10 +30,12 @@ import {
   apiCanAccessViewMode,
   apiHasType,
   apiIsOfType,
+  apiPublishesTitle,
   CanAccessViewMode,
   EmbeddableApiContext,
   getInheritedViewMode,
   HasType,
+  PublishesTitle,
 } from '@kbn/presentation-publishing';
 import { toMountPoint } from '@kbn/react-kibana-mount';
 import { CSV_REPORTING_ACTION, JobAppParamsCSV } from '@kbn/reporting-export-types-csv-common';
@@ -43,7 +45,6 @@ import { IncompatibleActionError } from '@kbn/ui-actions-plugin/public';
 import type { ClientConfigType } from '@kbn/reporting-public/types';
 import { checkLicense } from '@kbn/reporting-public/license_check';
 import type { ReportingAPIClient } from '@kbn/reporting-public/reporting_api_client';
-
 import { getI18nStrings } from './strings';
 
 export interface PanelActionDependencies {
@@ -82,7 +83,11 @@ interface ExecutionParams {
   i18nStart: I18nStart;
 }
 
-type GetCsvActionApi = HasType & PublishesSavedSearch & CanAccessViewMode & HasTimeRange;
+type GetCsvActionApi = HasType &
+  PublishesSavedSearch &
+  CanAccessViewMode &
+  HasTimeRange &
+  PublishesTitle;
 
 const compatibilityCheck = (api: EmbeddableApiContext['embeddable']): api is GetCsvActionApi => {
   return (
@@ -90,7 +95,8 @@ const compatibilityCheck = (api: EmbeddableApiContext['embeddable']): api is Get
     apiIsOfType(api, SEARCH_EMBEDDABLE_TYPE) &&
     apiPublishesSavedSearch(api) &&
     apiCanAccessViewMode(api) &&
-    Boolean((api as unknown as HasTimeRange).hasTimeRange)
+    Boolean((api as unknown as HasTimeRange).hasTimeRange) &&
+    apiPublishesTitle(api)
   );
 };
 
@@ -196,7 +202,7 @@ export class ReportingCsvPanelAction implements ActionDefinition<EmbeddableApiCo
       addGlobalTimeFilter: !embeddable.hasTimeRange(),
       absoluteTime: true,
     });
-    const title = savedSearch.title || '';
+    const title = embeddable.title$.getValue() ?? '';
     const executionParams = { searchSource, columns, title, savedSearch, i18nStart, analytics };
 
     return this.executeGenerate(executionParams);