bundler: list metafile inputs in reachable-files order and CSS chunks in entry point order - #36974

This review found nothing new to report: everything it verified is already covered by existing review comments on this pull request, or was judged not worth a comment, so no new findings were posted.

The root REVIEW.md applied to this review uses 26,156 of the 150,000 bytes allowed for it and any files it includes.