This CL exposes the helper class publicly to facilitate sequences
implementation, as discussed in
https://chromium-review.googlesource.com/c/chromium/src/+/3111815.

Bug: chromium:1052746
Change-Id: I3f3c24412c022014fc15b563201a63ee0691f6bc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3236549
Auto-Submit: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77568}