net: don't return the stream object from onStreamRead

CallJSOnreadMethod expects the return value to be undefined or
a new buffer, so make sure to return nothing, even when an error
causes us to destroy the stream.

Fixes: https://github.com/nodejs/node/issues/34346

PR-URL: https://github.com/nodejs/node/pull/34375


Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>