Attach (recommended) or Link to PDF file here:
[test.pdf](https://github.com/mozilla/pdf.js/files/6270827/test.pdf)
Configuration:
- Web browser and its version:chrome 89
- Operating system and its version:win10
- PDF.js version: 2.4/2.7/2.8 no working
- Is a browser extension: no 

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/18545199/113852392-1ae26080-97cf-11eb-9dc9-0cecf52d267b.png)

What went wrong? (add screenshot)
![1617791294(1)](https://user-images.githubusercontent.com/18545199/113852355-10c06200-97cf-11eb-8672-598750f1093a.jpg)


console this log : **FormatError: TrueType Collection does not contain "DCWGQU+CambriaMath" font** 

any solution?thanks
switch (type) {
    case "Type1":
      return subtype === "Type1C" ? FontType.TYPE1C : FontType.TYPE1;
    case "CIDFontType0":
      return subtype === "CIDFontType0C"
        ? FontType.CIDFONTTYPE0C
        : FontType.CIDFONTTYPE0;
    case "OpenType":
      return FontType.OPENTYPE;
    case "TrueType":
      return FontType.TRUETYPE;
    case "CIDFontType2":
      return FontType.CIDFONTTYPE2;
    case "MMType1":
      return FontType.MMTYPE1;
    case "Type0":
      return FontType.TYPE0;
    default:
      return FontType.UNKNOWN;
  }
}
function recoverGlyphName(name, glyphsUnicodeMap) {