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.
switch (this.items.children.length) {
        case 0:
          node = new TextEdit({});
          this.ui.textEdit = node;
          break;
        case 1:
          node = new CheckButton({});
          this.ui.checkButton = node;
          break;
        case 2:
          node = new ChoiceList({});
          this.ui.choiceList = node;
          break;
      }
      this.ui[$appendChild](node);
    }
    setTabIndex(this);
    if (
      !this.ui ||
      this.presence === "hidden" ||
      this.presence === "inactive" ||
      this.h === 0 ||
      this.w === 0
    ) {
      return HTMLResult.EMPTY;
    }
    if (this.caption) {