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.
constructor(attributes) {
    super(CONFIG_NS_ID, "amd");
  }
}
class Area extends XFAObject {
  constructor(attributes) {
    super(CONFIG_NS_ID, "area");
    this.level = getInteger({
      data: attributes.level,
      defaultValue: 0,
      validate: n => n >= 1 && n <= 3,
    });
    this.name = getStringOption(attributes.name, [
      "",
      "barcode",
      "coreinit",
      "deviceDriver",
      "font",
      "general",
      "layout",
      "merge",
      "script",
      "signature",
      "sourceSet",
      "templateCache",
    ]);
  }
}
class Attributes extends OptionObject {