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
annotation
                .getOperatorList(
                  partialEvaluator,
                  task,
                  renderInteractiveForms,
                  annotationStorage
                )
                .catch(function (reason) {
                  warn(
                    "getOperatorList - ignoring annotation data during " +
                      `"${task.name}" task: "${reason}".`
                  );
                  return null;
                })
            );
          }
        }
        return Promise.all(opListPromises).then(function (opLists) {
          pageOpList.addOp(OPS.beginAnnotations, []);
          for (const opList of opLists) {
            pageOpList.addOpList(opList);
          }
          pageOpList.addOp(OPS.endAnnotations, []);
          pageOpList.flush(true);
          return { length: pageOpList.totalLength };
        });
      }
    );
  }
  extractTextContent({