JSWeakRef and WeakCell both have weak pointers, which should be marked
as such in heap profiler snapshots.

Bug: v8:12112
Change-Id: Ie7aaa2cd3e44552427679e650e462d64704725d1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3299592Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#78133}