dnc导出，增加写入下发目录的代码

yangys

2025-08-04 96481362fed4eab7b96cc9016ece1917b43bbcc5

 blade-service/blade-mdm/src/main/java/org/springblade/mdm/program/vo/NcNodeVO.java

@@ -47,7 +47,8 @@
   private Integer flowStatus;
   @Schema(description = "子节点")
   private List<NcNodeVO> children;

   @Schema(description = "流程实例id，程序包节点有此属性")
   private String processInstanceId;
   public void addChildren(NcNodeVO node){
      if(children == null){
         children = new ArrayList<NcNodeVO>();