This will allow us to target the new executable from existing JS fuzzers
(like the ochang fuzzer). Let's see if this gives more interesting JS
input files.

R=machenbach@chromium.org
CC=szuend@chromium.org

Bug: chromium:1142437
Change-Id: Id5bcfe660a487fbb9d6b80d167f43324cc284e1f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2536632
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71182}