Sync to spec changes in
PR2028 Consistently call observable operations with undefined options
https://github.com/tc39/proposal-temporal/pull/2028

Bug: v8:11544
Change-Id: I850761e76ba1bb33f6c3b655a71163d1b68bb4c8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3633618Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80433}