repl: change preview default in case of custom eval functions

Custom eval functions might have a very different behavior than the
current implementation and having a preview in such case might be
confusing. This changes the preview default to `false` in case a
custom eval function is used. It is still possible to opt into using
the previews in case that's still desirable.

PR-URL: https://github.com/nodejs/node/pull/31259


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>