Word file used: 
[Formular_T.docx](https://github.com/mozilla/pdf.js/files/6907859/Formular_T.docx)

PDFs generated:
PDF 1: [Formular_T_default.pdf](https://github.com/mozilla/pdf.js/files/6907771/Formular_T_default.pdf)
PDF 2: [Formular_T_changed.pdf](https://github.com/mozilla/pdf.js/files/6907772/Formular_T_changed.pdf)

- PDF.js version: v2.9.359

Steps to reproduce the problem:
1. Create Word Document with Checkbox and check it.
2. Convert Word document to PDF using **Aspose.pdf** (for .net)

3. Extra: Change value of second Checkbox  in PDF 1 and save the file (PDF 2). The new File will show both Checkboxes checked in other browser, but only the newly checked one in PDF.js

Expected:
Checkbox is checked (pdf viewer from adobe/Chrome Version 92.0.4515.107 64-bit)
![image](https://user-images.githubusercontent.com/76941221/127659557-42be1cca-3c90-49b8-b224-70ee85aa1b30.png)

Result:
Checkbox is not checked (Mozilla Firefox/PDF.js)
![image](https://user-images.githubusercontent.com/76941221/127660064-e3cdc3f9-6887-4ae7-af27-d46cded69029.png)



const operatorList = new OperatorList();
    const initialState = {
      font: null,
      clone() {
        return this;
      },
    };
    const { fontName, fontSize } = this.data.defaultAppearanceData;
    await evaluator.handleSetFont(
      this._fieldResources.mergedResources,
      [fontName && Name.get(fontName), fontSize],
       null,
      operatorList,
      task,
      initialState,
       null
    );
    return initialState.font;
  }
  _computeFontSize(height, lineCount) {
    let { fontSize } = this.data.defaultAppearanceData;
    if (!fontSize) {
      
      
      
      const roundWithOneDigit = x => Math.round(x * 10) / 10;