stream: improve buffer list inspection

This makes sure the indentation level is correct, no matter if the
inspected buffer list is inspected on a deeper level and custom
inspect options are now passed through to the actual inspection.

PR-URL: https://github.com/nodejs/node/pull/23109


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