This will allow making HeapObject::IsBlah() checks faster when external
code space is enabled.

Bug: v8:11880
Change-Id: I68473ba88063c555c90330c9748462adeb35aa0b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3308797Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78156}