test: add i18n to cli-hello-world integration test (#23527)

PR Close #23527

integration/cli-hello-world/e2e/app.e2e-spec.ts

@@ -11,4 +11,9 @@ describe('cli-hello-world App', () => {
     page.navigateTo();
     expect(page.getParagraphText()).toEqual('Welcome to app!');
   });
+
+  it('the percent pipe should work', () => {
+    page.navigateTo();
+    expect(page.getPipeContent()).toEqual('100 % awesome');
+  })
 });

integration/cli-hello-world/e2e/app.po.ts

@@ -8,4 +8,8 @@ export class AppPage {
   getParagraphText() {
     return element(by.css('app-root h1')).getText();
   }
+
+  getPipeContent() {
+    return element(by.css('app-root p')).getText();
+  }
 }