fix(mobile-app): 添加缺失的 authProvider 导入

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mobile-app/lib/features/auth/presentation/pages/set_password_page.dart

@@ -5,6 +5,7 @@ import 'package:go_router/go_router.dart';
 import '../../../../core/di/injection_container.dart';
 import '../../../../core/services/multi_account_service.dart';
 import '../../../../routes/route_paths.dart';
+import '../providers/auth_provider.dart';
 
 /// 设置登录密码页面参数
 class SetPasswordParams {