Attach (recommended) or Link to PDF file here:
[FormDB2_fr.pdf](https://github.com/mozilla/pdf.js/files/7352426/FormDB2_fr.pdf)

Configuration:
- Web browser and its version: Firefox nightly
- Operating system and its version: linux debian

Steps to reproduce the problem:
1. Open the pdf
2. The image on the top of each pages is missing 

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/137465500-e8788893-f33d-4532-871d-43b464fa85f4.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/137465363-f2b35fe4-6776-45e9-b9e4-ccef6d9ad670.png)

while (node) {
    if (!node.traversal) {
      node[$tabIndex] = node[$getParent]()[$tabIndex];
      return;
    }
    if (node[$tabIndex]) {
      return;
    }
    let next = null;
    for (const child of node.traversal[$getChildren]()) {
      if (child.operation === "next") {
        next = child;
        break;
      }
    }
    if (!next || !next.ref) {
      node[$tabIndex] = node[$getParent]()[$tabIndex];
      return;
    }
    const root = node[$getTemplateRoot]();
    node[$tabIndex] = ++root[$tabIndex];
    const ref = root[$searchNode](next.ref, node);
    if (!ref) {
      return;
    }
    node = ref[0];
  }
}
function applyAssist(obj, attributes) {