frontend-test-utils: remove render method

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/search-react/src/alpha/blueprints/SearchResultListItemBlueprint.test.tsx

@@ -16,7 +16,10 @@
 
 import React from 'react';
 import { SearchResultListItemBlueprint } from './SearchResultListItemBlueprint';
-import { createExtensionTester } from '@backstage/frontend-test-utils';
+import {
+  createExtensionTester,
+  renderInTestApp,
+} from '@backstage/frontend-test-utils';
 import {
   PageBlueprint,
   createExtensionInput,
@@ -107,17 +110,17 @@ describe('SearchResultListItemBlueprint', () => {
     });
 
     await expect(
-      createExtensionTester(mockSearchPage)
-        .add(extension)
-        .render()
-        .findByText('noTrack: false'),
+      renderInTestApp(
+        createExtensionTester(mockSearchPage).add(extension).reactElement(),
+      ).findByText('noTrack: false'),
     ).resolves.toBeInTheDocument();
 
     await expect(
-      createExtensionTester(mockSearchPage)
-        .add(extension, { config: { noTrack: true } })
-        .render()
-        .findByText('noTrack: true'),
+      renderInTestApp(
+        createExtensionTester(mockSearchPage)
+          .add(extension, { config: { noTrack: true } })
+          .reactElement(),
+      ).findByText('noTrack: true'),
     ).resolves.toBeInTheDocument();
   });
 });