Implement missing getters error & closed. Add support for
proper "writable" check through `isWritable` helper.
We cannot fix the `OutgoingMessage.writable` property as that
would break the ecosystem.
PR-URL: https://github.com/nodejs/node/pull/45672
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Minwoo Jung <nodecorelab@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>