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
for (
          let glyphId = 0, charstringsLen = charstrings.length;
          glyphId < charstringsLen;
          glyphId++
        ) {
          const charCode = properties.cMap.charCodeOf(glyphId);
          
          charCodeToGlyphId[charCode] = glyphId + 1;
        }
        return charCodeToGlyphId;
      }
      var glyphNames = [".notdef"],
        glyphId;
      for (glyphId = 0; glyphId < charstrings.length; glyphId++) {
        glyphNames.push(charstrings[glyphId].glyphName);
      }
      var encoding = properties.builtInEncoding;
      if (encoding) {
        var builtInEncoding = Object.create(null);
        for (var charCode in encoding) {
          glyphId = glyphNames.indexOf(encoding[charCode]);
          if (glyphId >= 0) {
            builtInEncoding[charCode] = glyphId;
          }
        }
      }
      return type1FontGlyphMapping(properties, builtInEncoding, glyphNames);
    },
    hasGlyphId: function Type1Font_hasGlyphID(id) {
      if (id < 0 || id >= this.numGlyphs) {