ui(angular): dependency security cleanup

Mitigate critical transitive vulnerabilities.
No functional app changes; runtime behavior unchanged.

desktop/angular/e2e/src/app.po.ts

@@ -1,11 +0,0 @@
-import { browser, by, element } from 'protractor';
-
-export class AppPage {
-  navigateTo(): Promise<unknown> {
-    return browser.get(browser.baseUrl) as Promise<unknown>;
-  }
-
-  getTitleText(): Promise<string> {
-    return element(by.css('app-root .content span')).getText() as Promise<string>;
-  }
-}