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
"nonbreakingspace", "Agrave", "Atilde", "Otilde", "OE", "oe", "endash",
  "emdash", "quotedblleft", "quotedblright", "quoteleft", "quoteright",
  "divide", "lozenge", "ydieresis", "Ydieresis", "fraction", "currency",
  "guilsinglleft", "guilsinglright", "fi", "fl", "daggerdbl", "periodcentered",
  "quotesinglbase", "quotedblbase", "perthousand", "Acircumflex",
  "Ecircumflex", "Aacute", "Edieresis", "Egrave", "Iacute", "Icircumflex",
  "Idieresis", "Igrave", "Oacute", "Ocircumflex", "apple", "Ograve", "Uacute",
  "Ucircumflex", "Ugrave", "dotlessi", "circumflex", "tilde", "macron",
  "breve", "dotaccent", "ring", "cedilla", "hungarumlaut", "ogonek", "caron",
  "Lslash", "lslash", "Scaron", "scaron", "Zcaron", "zcaron", "brokenbar",
  "Eth", "eth", "Yacute", "yacute", "Thorn", "thorn", "minus", "multiply",
  "onesuperior", "twosuperior", "threesuperior", "onehalf", "onequarter",
  "threequarters", "franc", "Gbreve", "gbreve", "Idotaccent", "Scedilla",
  "scedilla", "Cacute", "cacute", "Ccaron", "ccaron", "dcroat"];
function adjustWidths(properties) {
  if (!properties.fontMatrix) {
    return;
  }
  if (properties.fontMatrix[0] === FONT_IDENTITY_MATRIX[0]) {
    return;
  }
  
  var scale = 0.001 / properties.fontMatrix[0];
  var glyphsWidths = properties.widths;
  for (var glyph in glyphsWidths) {
    glyphsWidths[glyph] *= scale;
  }
  properties.defaultWidth *= scale;
}
function adjustToUnicode(properties, builtInEncoding) {