refactor(workflow):

- 将User字段重命名为UserId以提高代码可读性

OpenAuth.App/workflow/WorkflowEngineApp.cs

@@ -1230,7 +1230,7 @@ public class WorkflowEngineApp : SqlSugarBaseApp<SysCategoryType, SugarDbContext
             .Where((u, ur, uo, o) => ur.RoleId == roleId)
             .Select((u, ur, uo, o) => new
             {
-                User = u.Id,
+                UserId = u.Id,
                 UserName = u.Name,
                 Dept = o.Name
             }).ToList();