...to allow pointer decompression at use-site.

Bug: v8:13056, v8:7703
Change-Id: If369286814c76340a945cc2a9fd863888a813080
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3811737Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Hao A Xu <hao.a.xu@intel.com>
Cr-Commit-Position: refs/heads/main@{#82242}