stream: finished callback for closed streams

Previously finished(stream, cb) would not invoke the callback
for streams that have already finished, ended or errored
before being passed to finished(stream, cb).

PR-URL: https://github.com/nodejs/node/pull/31509
Refs: https://github.com/nodejs/node/pull/31508


Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>