Attach (recommended) or Link to PDF file here:
[test.pdf](https://github.com/mozilla/pdf.js/files/6715502/test.pdf)

Configuration:
- Web browser and its version: Google Chrome Version 91.0.4472.114 
- Operating system and its version: Windows 10 Enterprise
- PDF.js version: 
- Is a browser extension: yes

Steps to reproduce the problem:
1. download file
2. open file



What is the expected behavior? (add screenshot)
show symbol
![image](https://user-images.githubusercontent.com/50500976/123409847-55ca8800-d5b7-11eb-9e5b-c7f3b33c00e1.png)

What went wrong? (add screenshot)
Does not show symbol
![image](https://user-images.githubusercontent.com/50500976/123409707-274cad00-d5b7-11eb-9a64-b11dcf3cdc3f.png)
Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension): Latest Version Chrome extension

const namesRecordCount = strings.length * platforms.length;
  let nameTable =
    "\x00\x00" + 
    string16(namesRecordCount) + 
    string16(namesRecordCount * 12 + 6); 
  
  let strOffset = 0;
  for (i = 0, ii = platforms.length; i < ii; i++) {
    const strs = names[i];
    for (j = 0, jj = strs.length; j < jj; j++) {
      str = strs[j];
      const nameRecord =
        platforms[i] + 
        encodings[i] + 
        languages[i] + 
        string16(j) + 
        string16(str.length) +
        string16(strOffset);
      nameTable += nameRecord;
      strOffset += str.length;
    }
  }
  nameTable += strings.join("") + stringsUnicode.join("");
  return nameTable;
}
/**
 * 'Font' is the class the outside world should use, it encapsulate all the font
 * decoding logics whatever type it is (assuming the font type is supported).
 */
class Font {