The special symbols defined in heap-symbols.h were extracted out of
src/heap/heap.{cc,h} a long time ago because they logically belong to
the objects and not to the implementation of the GC/heap, so they should
have the same ownership as the objects that use them in src/objects.

Bug: none
Change-Id: I9a87c1600dc26b0fc5e620a13d409fb9116235e2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3375546Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78539}