Attach (recommended) or Link to PDF file here:
[Form_MGT-7.pdf](https://github.com/mozilla/pdf.js/files/6768253/Form_MGT-7.pdf)

When we try to open the above pdf, we get in the console:
```
Warning: XFA - an error occured during parsing and binding: TypeError: x.include is not a function
```
which is caused by a typo:
https://github.com/mozilla/pdf.js/blob/b9e84ba70ec5a4a30333b9092f316c9ec7b7f079/src/core/xfa/config.js#L174
 
So fixing the typo allows to open the pdf but there is only 1 page when we have 9 in using masterpdfeditor.
return new SubformSet(attrs);
  }
  static subjectDN(attrs) {
    return new SubjectDN(attrs);
  }
  static subjectDNs(attrs) {
    return new SubjectDNs(attrs);
  }
  static submit(attrs) {
    return new Submit(attrs);
  }
  static template(attrs) {
    return new Template(attrs);
  }
  static text(attrs) {
    return new Text(attrs);
  }
  static textEdit(attrs) {
    return new TextEdit(attrs);
  }
  static time(attrs) {
    return new Time(attrs);
  }
  static timeStamp(attrs) {
    return new TimeStamp(attrs);
  }
  static toolTip(attrs) {
    return new ToolTip(attrs);
  }
  static traversal(attrs) {