[7.x] Refresh index pattern list before redirecting (#63329)

src/legacy/core_plugins/kibana/public/discover/plugin.ts

@@ -147,6 +147,9 @@ export class DiscoverPlugin implements Plugin<void, void> {
         await this.initializeServices();
         await this.initializeInnerAngular();
 
+        // make sure the index pattern list is up to date
+        const [, { data: dataStart }] = await core.getStartServices();
+        await dataStart.indexPatterns.clearCache();
         const { renderApp } = await import('./np_ready/application');
         const unmount = await renderApp(innerAngularName, params.element);
         return () => {

src/plugins/dashboard/public/plugin.tsx

@@ -251,6 +251,8 @@ export class DashboardPlugin
           localStorage: new Storage(localStorage),
           usageCollection,
         };
+        // make sure the index pattern list is up to date
+        await dataStart.indexPatterns.clearCache();
         const { renderApp } = await import('./application/application');
         const unmount = renderApp(params.element, params.appBasePath, deps);
         return () => {

src/plugins/visualize/public/plugin.ts

@@ -123,6 +123,8 @@ export class VisualizePlugin
         };
         setServices(deps);
 
+        // make sure the index pattern list is up to date
+        await pluginsStart.data.indexPatterns.clearCache();
         const { renderApp } = await import('./application/application');
         const unmount = renderApp(params.element, params.appBasePath, deps);
         return () => {

test/functional/page_objects/dashboard_page.ts

@@ -215,6 +215,8 @@ export function DashboardPageProvider({ getService, getPageObjects }: FtrProvide
 
     public async clickNewDashboard() {
       await listingTable.clickNewButton('createDashboardPromptButton');
+      // make sure the dashboard page is shown
+      await this.waitForRenderComplete();
     }
 
     public async clickCreateDashboardPrompt() {