test(editor): Mock /api/whats-new request during E2E tests (no-changelog) (#16826)

cypress/support/e2e.ts

@@ -94,4 +94,16 @@ beforeEach(() => {
 			description: 'Includes <strong>core functionality</strong> and <strong>bug fixes</strong>',
 		},
 	]).as('getVersions');
+	cy.intercept(
+		{ pathname: '/api/whats-new' },
+		{
+			id: 1,
+			title: "What's new",
+			calloutText: '',
+			footer: '',
+			createdAt: '2025-06-27T14:55:58.717Z',
+			updatedAt: '2025-06-27T15:06:44.092Z',
+			items: [],
+		},
+	).as('getWhatsNew');
 });