Also fix several out of date comments.

Change-Id: I15ee6c718ad50f231cd0a8e5c6416ccb58375140
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3121693
Commit-Queue: Ji Qiu <qiuji@iscas.ac.cn>
Reviewed-by: Brice Dobry <brice.dobry@futurewei.com>
Cr-Commit-Position: refs/heads/main@{#76633}