Call test functions immediately, and make them print their name before
execution.

R=thibaudm@chromium.org

Change-Id: I2057e2b3c2032c342a86705dbda8992aa54493e5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3793612
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82077}