Hi there,

The node example provided (https://github.com/mozilla/pdf.js/tree/master/examples/node) fails on node.js >= 16.7. I believe that's due to the fact that the runtime is checked via `URL.createObjectURL` in `legacy/build/pdf.js` (repo: https://github.com/mozilla/pdfjs-dist/blob/master/legacy/build/pdf.js#L2459) and the fact that it has been recently introduced in node 16.7 (see: https://nodejs.org/api/url.html#urlcreateobjecturlblob)

Configuration:
- Node.js 16.7 or 16.8
- PDF.js version: latest

Steps to reproduce the problem:
1. Run pdf.js node example with node 16.7 or later

Error:
`stack:'ReferenceError: Blob is not defined\n    at createObjectURL`

Thanks!
if (typeof str !== "string") {
    warn("The argument for removeNullCharacters must be a string.");
    return str;
  }
  return str.replace(NullCharactersRegExp, "");
}
function bytesToString(bytes) {
  assert(
    bytes !== null && typeof bytes === "object" && bytes.length !== undefined,
    "Invalid argument for bytesToString"
  );
  const length = bytes.length;
  const MAX_ARGUMENT_COUNT = 8192;
  if (length < MAX_ARGUMENT_COUNT) {
    return String.fromCharCode.apply(null, bytes);
  }
  const strBuf = [];
  for (let i = 0; i < length; i += MAX_ARGUMENT_COUNT) {
    const chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length);
    const chunk = bytes.subarray(i, chunkEnd);
    strBuf.push(String.fromCharCode.apply(null, chunk));
  }
  return strBuf.join("");
}
function stringToBytes(str) {