The following code is flagged as dead (since it's *replacing* rather than updating the existing Object):
https://github.com/mozilla/pdf.js/blob/4483cba72410027acf46630ebf252ae529704476/src/core/xfa/template.js#L2336-L2339
according to the alert in https://github.com/mozilla/pdf.js/security/code-scanning/103?query=ref%3Arefs%2Fheads%2Fmaster

Looking at the surrounding code, I can see a couple of possibilities here:
 1. This is indeed just dead code, which should be removed.
 2. The code should be moved up, and placed just *above* the previous block instead.
 3. There should be other, more invasive, changes made to this code...

/cc @calixteman Which solution is correct here?
Assuming it's either option 1 or 2, I can submit a patch to fix this.
constructor(attributes) {
    super(TEMPLATE_NS_ID, "choiceList",  true);
    this.commitOn = getStringOption(attributes.commitOn, ["select", "exit"]);
    this.id = attributes.id || "";
    this.open = getStringOption(attributes.open, [
      "userControl",
      "always",
      "multiSelect",
      "onEntry",
    ]);
    this.textEntry = getInteger({
      data: attributes.textEntry,
      defaultValue: 0,
      validate: x => x === 1,
    });
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.border = null;
    this.extras = null;
    this.margin = null;
  }
  [$toHTML](availableSpace) {
    
    const style = toStyle(this, "border", "margin");
    const ui = this[$getParent]();
    const field = ui[$getParent]();
    const children = [];
    if (field.items.children.length > 0) {