Attach (recommended) or Link to PDF file here:
[chinese.pdf](https://github.com/mozilla/pdf.js/files/6404389/download.1.pdf)

Configuration:
- Web browser and its version:90.0.4430.93
- Operating system and its version: mac 10.15.5
- PDF.js version: 2.9.146
- Is a browser extension:no

Steps to reproduce the problem:
1. The Chinese in the attachment cannot be rendered

Brower ✅
![image](https://user-images.githubusercontent.com/13477114/116678074-81782a00-a9db-11eb-8719-74f48fcebc2b.png)

PDF.js ❌ [https://mozilla.github.io/pdf.js/web/viewer.html](https://mozilla.github.io/pdf.js/web/viewer.html)
![image](https://user-images.githubusercontent.com/13477114/116678212-a371ac80-a9db-11eb-847f-dd1ad7752c13.png)


What is the expected behavior? (add screenshot)
**The Chinese character can be rendered**
What went wrong? (add screenshot)
**All of the Chinese character cannot be rendered**
Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

numGlyphs,
      dupFirstEntry
    ) {
      if (!header) {
        if (metrics) {
          metrics.data = null;
        }
        return;
      }
      file.pos = (file.start ? file.start : 0) + header.offset;
      file.pos += 4; 
      file.pos += 2; 
      file.pos += 2; 
      file.pos += 2; 
      file.pos += 2; 
      file.pos += 2; 
      file.pos += 2; 
      file.pos += 2; 
      file.pos += 2; 
      file.pos += 2; 
      const caretOffset = file.getUint16();
      file.pos += 8; 
      file.pos += 2; 
      let numOfMetrics = file.getUint16();
      if (caretOffset !== 0) {
        const macStyle = int16(headTable.data[44], headTable.data[45]);
        if (!(macStyle & 2)) {
          
          header.data[22] = 0;
          header.data[23] = 0;