1. read and output into option after timeZoneName
2. Not output into resolvedOptions if dateStyle or timeStyle is presented.
3. Add unit test

Spec: https://github.com/tc39/ecma402/pull/347

Bug: v8:10438
Change-Id: Ie7fecdb5b6dc83dc9a6dfd8ced26679a4051c833
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2161509
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67344}