... because tools/v8heapconst.py was created for default x64 release
mode (with enabled pointer compression).

Bug: v8:7703, v8:10621
Change-Id: I1fbcd81aac26e0b357279b7dffa97c64a5415e40
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2250238Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68397}