Attach (recommended) or Link to PDF file here:
issue13500 (in test corpus)

This regressed when landing #13566. 

What is the expected behavior? (add screenshot)
<img width="664" alt="image" src="https://user-images.githubusercontent.com/942640/122467522-7bc8aa80-cf6f-11eb-9d4d-311eb7c64fb2.png">


What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/942640/122467565-85eaa900-cf6f-11eb-9c10-8a8686ed440c.png)


"ksc-5601",
          "none",
          "shift-jis",
          "ucs-2",
          "utf-16",
        ].includes(k) || k.match(/iso-8859-[0-9]{2}/),
    });
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.xdpContent = attributes.xdpContent || "";
    this.encrypt = null;
    this.encryptData = new XFAObjectArray();
    this.signData = new XFAObjectArray();
  }
}
class Template extends XFAObject {
  constructor(attributes) {
    super(TEMPLATE_NS_ID, "template",  true);
    this.baseProfile = getStringOption(attributes.baseProfile, [
      "full",
      "interactiveForms",
    ]);
    this.extras = null;
    
    
    
    
    this.subform = new XFAObjectArray();
  }
  [$finalize]() {