[intl] reorder intl builtin definitions alphabetically

Bug: v8:5751
Change-Id: I978b5b1da41040132204b64dde3f44985b44255d
Reviewed-on: https://chromium-review.googlesource.com/1208110
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55663}