This commit updates the test runner to make the built in test
reporters internal modules.
PR-URL: https://github.com/nodejs/node/pull/46092
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
