This is a reland of f70e5abf

Fix by casting std::strlen() to int32_t
Original change's description:
> Avoid UTF8 conversion in JSNumberFormat
>
> Change-Id: Idf4e95e6979adfbca24f8fd213967f821a136d87
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2057930
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Frank Tang <ftang@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66353}

Change-Id: I764265217202151b6c02d1d7b01b7c71af677e36
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2062743
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66359}