feat(sso): [PM-8114] implement SSO component UI refresh

Consolidates existing SSO components into a single unified component in
libs/auth, matching the new design system. This implementation:

- Creates a new shared SsoComponent with extracted business logic
- Adds feature flag support for unauth-ui-refresh
- Updates page styling including new icons and typography
- Preserves web client claimed domain logic
- Maintains backwards compatibility with legacy views

PM-8114

---------

Co-authored-by: Jared Snider <116684653+JaredSnider-Bitwarden@users.noreply.github.com>
Co-authored-by: Jared Snider <jsnider@bitwarden.com>

apps/desktop/src/app/services/services.module.ts

@@ -25,6 +25,8 @@ import {
   LoginComponentService,
   SetPasswordJitService,
   LockComponentService,
+  SsoComponentService,
+  DefaultSsoComponentService,
 } from "@bitwarden/auth/angular";
 import {
   InternalUserDecryptionOptionsServiceAbstraction,
@@ -361,6 +363,11 @@ const safeProviders: SafeProvider[] = [
     useClass: LoginEmailService,
     deps: [AccountService, AuthService, StateProvider],
   }),
+  safeProvider({
+    provide: SsoComponentService,
+    useClass: DefaultSsoComponentService,
+    deps: [],
+  }),
   safeProvider({
     provide: LoginApprovalComponentServiceAbstraction,
     useClass: DesktopLoginApprovalComponentService,