Attach (recommended) or Link to PDF file here:
http://help.adobe.com/en_US/livecycle/11.0/SampleForms/941/Form.pdf

- Web browser and its version: Firefox 89.0.1
- Operating system and its version: Windows 10 10.0.19043.1052
- PDF.js version: commit bdfcdd6f8326f22c135edfa29a341ea4c558f3d1
- Is a browser extension: No

Steps to reproduce the problem:
1. Enable XFA support
2. Open form

What is the expected behavior? (add screenshot)
Page 3 (of 4) renders
![image](https://user-images.githubusercontent.com/7104454/122686842-622e9980-d1e1-11eb-92ab-86fe488560f2.png)

What went wrong? (add screenshot)
Only 3 pages total render in pdf.js
return this.getPage(0).catch(async reason => {
      if (reason instanceof XRefEntryException) {
        
        
        
        this._pagePromises.length = 0;
        await this.cleanup();
        throw new XRefParseException();
      }
    });
  }
  fontFallback(id, handler) {
    return this.catalog.fontFallback(id, handler);
  }
  async cleanup(manuallyTriggered = false) {
    return this.catalog
      ? this.catalog.cleanup(manuallyTriggered)
      : clearPrimitiveCaches();
  }
  /**
   * @private
   */
  _collectFieldObjects(name, fieldRef, promises) {