Spec Text:
https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.daysinweek

Note- this is only the non-intl version. intl version in
https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.daysinweek
will be implemented in later cl.

Bug: v8:11544
Change-Id: If54733ae7c902b4d189fc22b0800942f8748981c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3439186Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79721}