Add a WasmCodeRefScope around _v8_internal_Print_Code() because that
is needed for debugging.

R=clemensh@chromium.org

Change-Id: Ifdb7a32695163e0a109567ec00a52196e79e03db
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1585844Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61047}