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.
addHTML(this, html, bbox);
  }
  [$getAvailableSpace]() {
    return getAvailableSpace(this);
  }
  [$isSplittable]() {
    
    
    if (!this[$getSubformParent]()[$isSplittable]()) {
      return false;
    }
    const contentArea = this[$getTemplateRoot]()[$extra].currentContentArea;
    if (this.overflow && this.overflow[$getExtra]().target === contentArea) {
      return false;
    }
    if (this[$extra]._isSplittable !== undefined) {
      return this[$extra]._isSplittable;
    }
    if (this.layout === "position" || this.layout.includes("row")) {
      this[$extra]._isSplittable = false;
      return false;
    }
    if (this.keep && this.keep.intact !== "none") {
      this[$extra]._isSplittable = false;
      return false;
    }
    this[$extra]._isSplittable = true;
    return true;
  }
  [$toHTML](availableSpace) {