Attach (recommended) or Link to PDF file here:

[Actually downloaded from <https://github.com/pdf-association/pdf20examples/raw/master/pdf20-utf8-test.pdf>](https://github.com/mozilla/pdf.js/files/7871477/pdf20-utf8-test.pdf)


Configuration:
- Web browser and its version: _Firefox 96_.
- Operating system and its version: _Windows 7_.
- PDF.js version: the one that comes with _Firefox 96_.
- Is a browser extension: I think so.

Steps to reproduce the problem:
1. Open the file metadata, bookmarks and layers are displayed wrong.
2. The explanation on how this works for PDF-2 seems to be https://www.pdfa.org/understanding-utf-8-in-pdf-2-0/. 

What is the expected behavior? (add screenshot)

Right character display.

What went wrong? (add screenshot)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

const length = str.length,
    strBuf = [];
  if (str[0] === "\xFE" && str[1] === "\xFF") {
    
    for (let i = 2; i < length; i += 2) {
      strBuf.push(
        String.fromCharCode((str.charCodeAt(i) << 8) | str.charCodeAt(i + 1))
      );
    }
  } else if (str[0] === "\xFF" && str[1] === "\xFE") {
    
    for (let i = 2; i < length; i += 2) {
      strBuf.push(
        String.fromCharCode((str.charCodeAt(i + 1) << 8) | str.charCodeAt(i))
      );
    }
  } else {
    for (let i = 0; i < length; ++i) {
      const code = PDFStringTranslateTable[str.charCodeAt(i)];
      strBuf.push(code ? String.fromCharCode(code) : str.charAt(i));
    }
  }
  return strBuf.join("");
}
function escapeString(str) {