优化 bpm 高亮流程图的前端

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/controller/task/vo/activity/BpmActivityRespVO.java

@@ -20,6 +20,9 @@ public class BpmActivityRespVO {
     @ApiModelProperty(value = "流程活动的结束时间", required = true)
     private Date endTime;
 
+    @ApiModelProperty(value = "关联的流程任务的编号", example = "2048", notes = "关联的流程任务，只有 UserTask 等类型才有")
+    private String taskId;
+
     /**
      * 关联的流程任务，只有 UserTask 类型才有
      */