Revert "net: remove usage of require('util')"

This reverts commit e112fb4c.
This commit broke parallel/test-net-access-byteswritten.

PR-URL: https://github.com/nodejs/node/pull/26896


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>