Attach (recommended) or Link to PDF file here:
[occurmin0.pdf](https://github.com/mozilla/pdf.js/files/7340277/occurmin0.pdf)

Configuration:
- Web browser and its version: 95.0a1 (2021-10-13) (64-bit)
- Operating system and its version: Windows 10


Steps to reproduce the problem:
1. Open form in pdf.js

What is the expected behavior? (add screenshot)
Form is blank (subform `nomin`  does not display)
What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/7104454/137184675-d48027c0-1f17-4faa-bc97-b45814b38e36.png)

subform `nomin` displays, even though it's subform is set to `<occur max="-1" min="0" />`

if (
      !formNode.hasOwnProperty("items") ||
      !formNode.hasOwnProperty("bindItems") ||
      formNode.bindItems.isEmpty()
    ) {
      return;
    }
    for (const item of formNode.items.children) {
      formNode[$removeChild](item);
    }
    formNode.items.clear();
    const labels = new Items({});
    const values = new Items({});
    formNode[$appendChild](labels);
    formNode.items.push(labels);
    formNode[$appendChild](values);
    formNode.items.push(values);
    for (const { ref, labelRef, valueRef, connection } of formNode.bindItems
      .children) {
      if (connection) {
        
        
        continue;
      }