Make sure AddAllSequenceSlowCallback works on arrays where some
elements cannot be accessed.

Bug: chromium:1338877
Change-Id: Icdf61a305fb208a91832d03ebc47201d8941e41a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3778410
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81896}