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/auth/src/common/abstractions/login-strategy.service.ts

@@ -71,4 +71,8 @@ export abstract class LoginStrategyServiceAbstraction {
    * Creates a master key from the provided master password and email.
    */
   makePreloginKey: (masterPassword: string, email: string) => Promise<MasterKey>;
+  /**
+   * Emits true if the two factor session has expired.
+   */
+  twoFactorTimeout$: Observable<boolean>;
 }