This reverts commit fb19bc36.

Reason for revert: Test is flaky (see https://logs.chromium.org/logs/v8/buildbucket/cr-buildbucket/8807487788813571761/+/u/Check_-_isolates__flakes_/regress-crbug-1347721)

Original change's description:
> [rab/gsab] Fix accessing raw byte length
>
> Bug: v8:11111,chromium:1347721
> Change-Id: Idff4256f6720841ca4dee8f691babe7245277046
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3782812
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
> Auto-Submit: Marja Hölttä <marja@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81995}

Bug: v8:11111,chromium:1347721
Change-Id: Ib29bd8fad1227acb21c79378c71ed081ba8b4914
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3789505
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#82007}