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)

constructor(attributes) {
    super(TEMPLATE_NS_ID, "certificate");
    this.id = attributes.id || "";
    this.name = attributes.name || "";
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
  }
}
class Certificates extends XFAObject {
  constructor(attributes) {
    super(TEMPLATE_NS_ID, "certificates",  true);
    this.credentialServerPolicy = getStringOption(
      attributes.credentialServerPolicy,
      ["optional", "required"]
    );
    this.id = attributes.id || "";
    this.url = attributes.url || "";
    this.urlPolicy = attributes.urlPolicy || "";
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.encryption = null;
    this.issuers = null;
    this.keyUsage = null;
    this.oids = null;
    this.signing = null;
    this.subjectDNs = null;
  }
}
class CheckButton extends XFAObject {