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)

attributes.role = "table";
  } else if (obj.layout === "row") {
    attributes.role = "row";
  } else {
    const parent = obj[$getParent]();
    if (parent.layout === "row") {
      if (parent.assist && parent.assist.role === "TH") {
        attributes.role = "columnheader";
      } else {
        attributes.role = "cell";
      }
    }
  }
}
function ariaLabel(obj) {
  if (!obj.assist) {
    return null;
  }
  const assist = obj.assist;
  if (assist.speak && assist.speak[$content] !== "") {
    return assist.speak[$content];
  }
  if (assist.toolTip) {
    return assist.toolTip[$content];
  }
  
  
  return null;
}
function valueToHtml(value) {