fix 代码优化

Src/Dlhis.ScheduledTask/TaskAssignment/Response/DeviceTaskAssignmentResponse.cs

@@ -57,6 +57,11 @@ public class DeviceTaskAssignmentResponse
     /// </summary>
     public string ResultMessage { get; set; }
 
+    /// <summary>
+    /// 任务创建时间
+    /// </summary>
+    public DateTime CreateTime { get; set; }
+
     /// <summary>
     /// 数据状态最新修改时间
     /// </summary>

Src/Dlhis.ScheduledTask/TaskAssignment/Services/Implements/DeviceTaskAssignmentService.cs

@@ -38,6 +38,7 @@ public class DeviceTaskAssignmentService : IDeviceTaskAssignmentService
                 UserName = ga.Name,
                 UserCode = ga.Code,
                 Type = deviceTask.Type,
+                CreateTime = deviceTask.CreateTime,
                 LastUpdateTime = deviceTask.ModifiedTime
             })
             .ToPageListAsync(request);