feat(auth): [PM-13659] implement 2FA timeout handling across clients

Add timeout state management for two-factor authentication flows in web, desktop,
and browser extension clients. Includes:

- New timeout screen component with 5-minute session limit
- Updated UI elements and styling
- Comprehensive test coverage

Refs: PM-13659

libs/angular/src/auth/components/two-factor.component.spec.ts

@@ -86,9 +86,12 @@ describe("TwoFactorComponent", () => {
   };
 
   let selectedUserDecryptionOptions: BehaviorSubject<UserDecryptionOptions>;
+  let twoFactorTimeoutSubject: BehaviorSubject<boolean>;
 
   beforeEach(() => {
+    twoFactorTimeoutSubject = new BehaviorSubject<boolean>(false);
     mockLoginStrategyService = mock<LoginStrategyServiceAbstraction>();
+    mockLoginStrategyService.twoFactorTimeout$ = twoFactorTimeoutSubject;
     mockRouter = mock<Router>();
     mockI18nService = mock<I18nService>();
     mockApiService = mock<ApiService>();
@@ -492,4 +495,10 @@ describe("TwoFactorComponent", () => {
       });
     });
   });
+
+  it("navigates to the timeout route when timeout expires", async () => {
+    twoFactorTimeoutSubject.next(true);
+
+    expect(mockRouter.navigate).toHaveBeenCalledWith(["2fa-timeout"]);
+  });
 });