Add tests for select, reject undefined globals for nullref and reformat JS

R=ahaas@chromium.org

Bug: chromium:10063
Change-Id: I97f7c86fe7435ca64ce1f4b86d8d9eadd29cc76b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2002531Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Emanuel Ziegler <ecmziegler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65795}