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)

if (this[$content] instanceof XFAObject) {
      return;
    }
    super[$onText](str);
  }
  [$finalize]() {
    if (typeof this[$content] === "string") {
      this[$content] = this[$content].replace(/\r\n/g, "\n");
    }
  }
  [$getExtra]() {
    if (typeof this[$content] === "string") {
      return this[$content]
        .split(/[\u2029\u2028\n]/)
        .reduce((acc, line) => {
          if (line) {
            acc.push(line);
          }
          return acc;
        }, [])
        .join("\n");
    }
    return this[$content][$text]();
  }
  [$toHTML](availableSpace) {