[Dashboards] Fix dashboard title not updating when edited from content editor (#236561)

## Summary

This PR fixes a bug where dashboard title in breadcrumbs wouldn't update
when edited from content editor flyout on dashboard listing page.


https://github.com/user-attachments/assets/9160d7a4-28d3-4066-b722-7201faa05d63

This issue was caused by a stale value in dashboard content management
cache.

Closes: #217116

Author: kowalczyk-krzysztof

src/platform/plugins/shared/dashboard/public/services/dashboard_content_management_service/lib/update_dashboard_meta.ts

@@ -15,6 +15,7 @@ import type {
 } from '../../../../server/content_management';
 import { findDashboardsByIds } from './find_dashboards';
 import { contentManagementService, savedObjectsTaggingService } from '../../kibana_services';
+import { getDashboardContentManagementCache } from '..';
 
 export interface UpdateDashboardMetaProps {
   id: DashboardUpdateIn['id'];
@@ -46,4 +47,6 @@ export const updateDashboardMeta = async ({
     data: { title, description },
     options: { references },
   });
+
+  getDashboardContentManagementCache().deleteDashboard(id);
 };