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/web/src/app/core/core.module.ts

@@ -32,6 +32,7 @@ import {
   LoginComponentService,
   LockComponentService,
   SetPasswordJitService,
+  SsoComponentService,
   LoginDecryptionOptionsService,
 } from "@bitwarden/auth/angular";
 import {
@@ -101,6 +102,7 @@ import {
   WebLockComponentService,
   WebLoginDecryptionOptionsService,
 } from "../auth";
+import { WebSsoComponentService } from "../auth/core/services/login/web-sso-component.service";
 import { AcceptOrganizationInviteService } from "../auth/organization-invite/accept-organization.service";
 import { HtmlStorageService } from "../core/html-storage.service";
 import { I18nService } from "../core/i18n.service";
@@ -301,6 +303,11 @@ const safeProviders: SafeProvider[] = [
     useClass: LoginEmailService,
     deps: [AccountService, AuthService, StateProvider],
   }),
+  safeProvider({
+    provide: SsoComponentService,
+    useClass: WebSsoComponentService,
+    deps: [I18nServiceAbstraction],
+  }),
   safeProvider({
     provide: LoginDecryptionOptionsService,
     useClass: WebLoginDecryptionOptionsService,