stream: add readableDidRead if has been read from

Adds did read accessor used to determine whether a readable has been
read from.

PR-URL: https://github.com/nodejs/node/pull/39589
Refs: https://github.com/nodejs/undici/pull/907


Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>