`transform` type error when stream value returned

The transform option used to support a stream return value, and is still documented as such:

transform Provide a function that takes an entry object, and returns a stream, or any falsey value.

However, the return type of this option was changed from any to ReadEntry in v7.5.12 (in this commit).

v7.5.12:
https://github.com/isaacs/node-tar/blob/2a294d3fbb24c18dc80f31059f49dd9af15653fe/src/options.ts#L240

v7.5.11:
https://github.com/isaacs/node-tar/blob/bf776f673164215074b62749e0fe80e5834588f4/src/options.ts#L242

A similar type error was reported in #459, regarding a falsey return value. That was fixed, but a stream return value still produces a type error today.

Specifically I encountered this error when returning a MiniPass stream, as the README suggested.

MInimal reproduction (valid with v7.5.11, raises type error with v7.5.12):

import { extract } from 'tar'
import { Minipass } from 'minipass';

export const repro = (fileList: string[]): ReturnType<typeof extract> => {
  return extract(
    {
      // Type error:
      // Type '() => Minipass<Buffer, Buffer, Minipass.Events<Buffer>>' is not assignable to type '(entry: ReadEntry) => ReadEntry'.
      transform: () => {
        return new Minipass({ async: true });
      },
    },
    fileList,
  );
};

Start in src/options.ts at the transform option type and compare the v7.5.11 and v7.5.12 definitions linked in the issue. Use the provided TypeScript reproduction with a MiniPass return value to verify the type accepts the documented stream return without reintroducing the falsey-value regression.