Sync to spec to allow BalanceDuration to throw.
Spec text:
https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.dateadd

PR change:
https://github.com/tc39/proposal-temporal/pull/2094

split from cl/3750098

Bug: v8:11544
Change-Id: I5a73dede2335bcf3f3e61a0ce789555671e5dda5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3824662Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82402}