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)

Object.assign(style, borderStyle);
      return HTMLResult.success(createWrapper(this, html), bbox);
    }
    if (this[$tabIndex]) {
      if (ui.children && ui.children[0]) {
        ui.children[0].attributes.tabindex = this[$tabIndex];
      } else {
        ui.attributes.tabindex = this[$tabIndex];
      }
    }
    if (!ui.attributes.style) {
      ui.attributes.style = Object.create(null);
    }
    let aElement = null;
    if (this.ui.button) {
      if (ui.children.length === 1) {
        [aElement] = ui.children.splice(0, 1);
      }
      Object.assign(ui.attributes.style, borderStyle);
    } else {
      Object.assign(style, borderStyle);
    }
    children.push(ui);
    if (this.value) {
      if (this.ui.imageEdit) {
        ui.children.push(this.value[$toHTML]().html);
      } else if (!this.ui.button) {
        let value = "";
        if (this.value.exData) {
          value = this.value.exData[$text]();