增加pdf，xlsx，docx文件预览功能

yangys

2025-12-03 b4d10ff7535002dddb63a0b28ddb37fee7ed1e9d

 blade-service/blade-mdm/src/main/java/org/springblade/mdm/flow/vo/ApproveTableInfo.java

@@ -28,5 +28,5 @@
   /**
    * 数控程序编号
    */
   private String programNo;
   private String programName;
}