fix(admin): 修复管理员用户服务中的返回值问题

- 在AdminUserServiceImpl中添加缺失的return语句
- 确保方法正确返回userVOS列表
- 解决了树形结构绑定功能的逻辑错误

nflg-mobilebroken-repository/src/main/java/com/nflg/mobilebroken/repository/service/impl/AdminUserServiceImpl.java

@@ -470,6 +470,7 @@ public class AdminUserServiceImpl extends ServiceImpl<AdminUserMapper, AdminUser
 //            List<AdminUserVO>
 //            rootDepartments.forEach(d -> getChildren1(d, departmentVOS, adminUsers, positions, roleMaps, roles));
             //TODO 绑定树形结构
+            return userVOS;
         }
     }