fix 处理已知问题

Src/Dlhis.ScheduledTask/TaskAssignment/Request/DeviceTaskAssignmentRequest.cs

@@ -32,6 +32,11 @@ public class DeviceTaskAssignmentRequest : PageDto, IValidatableObject
     public string Factory { get; set; }
 
 
+    /// <summary>
+    /// 是否离线
+    /// </summary>
+    public bool? IsOffline { get; set; }
+
     /// <summary>
     /// 搜索范围
     /// </summary>