test,repl: fix tests when inspector is disabled

Fixes: https://github.com/nodejs/node/issues/38558

PR-URL: https://github.com/nodejs/node/pull/38564


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>