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):

}
        if (
          platformId === 0 &&
          (encodingId ===  0 ||
            encodingId ===  1 ||
            encodingId ===  3)
        ) {
          useTable = true;
          
          
        } else if (platformId === 1 && encodingId === 0) {
          useTable = true;
          
          
        } else if (
          platformId === 3 &&
          encodingId === 1 &&
          (hasEncoding || !potentialTable)
        ) {
          useTable = true;
          if (!isSymbolicFont) {
            canBreak = true;
          }
        } else if (isSymbolicFont && platformId === 3 && encodingId === 0) {
          useTable = true;
          let correctlySorted = true;
          if (i < numTables - 1) {
            const nextBytes = file.peekBytes(2),
              nextPlatformId = int16(nextBytes[0], nextBytes[1]);
            if (nextPlatformId < platformId) {