The CodeObjectSlot might contain Smi zero during CodeDataContainer/Code
initialization.

Bug: v8:11880, v8:12962
Change-Id: I5fba135dfa1786716f30d7c8cdad3052a967d894
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3707100
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81182}