Attach (recommended) or Link to PDF file here:
https://www.canada.ca/content/dam/ircc/migration/ircc/english/pdf/kits/forms/eimm5669e.pdf
[eimm5669e.pdf](https://github.com/mozilla/pdf.js/files/7225677/eimm5669e.2.pdf)

Configuration:
- Web browser and its version: Firefox nightly
- Operating system and its version: Linux Debian

Steps to reproduce the problem:
1. Look at the bottom of page 2

className = "xfaCheckbox";
      dataId = (field[$data] && field[$data][$uid]) || field[$uid];
    }
    const input = {
      name: "input",
      attributes: {
        class: [className],
        style,
        fieldId,
        dataId,
        type,
        checked,
        xfaOn: exportedValue.on,
        xfaOff: exportedValue.off,
        "aria-label": ariaLabel(field),
      },
    };
    if (groupId) {
      input.attributes.name = groupId;
    }
    return HTMLResult.success({
      name: "label",
      attributes: {
        class: ["xfaLabel"],
      },
      children: [input],
    });
  }
}
class ChoiceList extends XFAObject {