The only exception is when pointer compression is on with a per-Isolate
cage.

Bug: v8:11708
Change-Id: Ice9b0114bc102c20b4151ec66a861ba673934605
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2864563Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74342}