stream: add no-half-open enforcer only if needed

The listener does not do anything if `allowHalfOpen` is enabled. Add it
only when `allowHalfOpen` is disabled.

PR-URL: https://github.com/nodejs/node/pull/18953


Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>