In v3 we allow both significant digits and fraction digits to be set in some conditions.
Also fix the case in v2 we didn't handle "precision-integer" with currency format.

Related spec text:
https://tc39.es/proposal-intl-numberformat-v3/out/numberformat/diff.html#sec-intl.numberformat.prototype.resolvedoptions
https://tc39.es/proposal-intl-numberformat-v3/out/numberformat/diff.html#sec-setnfdigitoptions

Bug: v8:11544
Change-Id: I89c147dcc7803eae7aad2a380e85d1d877e30370
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3615217
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80322}