For a while, we shipped a version which writes version 13 data with
JSArrayBufferView flags, and then fixed version 13 to not include the
flags.

This CL adds a compatibility mode for parsing the the version 13
data which includes the flags, since it still occurs in the wild.

Bug: chromium:1314833,chromium:1284506
Change-Id: I96cc432c8574a40b11ec0037394feb1853515760
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3583982Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79959}