The implementation is follows the implementation of table.copy, aside
from the table-index being passed as an intptr instead of a Smi. The
builtins of table.get/set and table.copy are different in that regard.

R=thibaudm@chromium.org

Bug: v8:7581
Change-Id: Ifde788b230083dc6633ce6b41e6acfb8b503b781
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2414211
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71615}