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!
const buffer8 = new Uint8Array(4);
  buffer8[0] = 1;
  const view32 = new Uint32Array(buffer8.buffer, 0, 1);
  return view32[0] === 1;
}
const IsLittleEndianCached = {
  get value() {
    return shadow(this, "value", isLittleEndian());
  },
};
function isEvalSupported() {
  try {
    new Function(""); 
    return true;
  } catch (e) {
    return false;
  }
}
const IsEvalSupportedCached = {
  get value() {
    return shadow(this, "value", isEvalSupported());
  },
};
const hexNumbers = [...Array(256).keys()].map(n =>
  n.toString(16).padStart(2, "0")
);
class Util {