Prefer MarkAllElementsForStyleRecalc instead of marking directly

MarkAllElementsForStyleRecalc uses the opportunity to clear some
invalidation data that we're going to rebuild anyway, so we should
call that instead of marking the document element for subtree recalc.

This is a follow-up / cleanup task after CSS Functions.

Fixed: 394760805
Change-Id: Ib10c52f2d6fdddacad4da380c0ca149c2b6d65ef
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6376105
Auto-Submit: Anders Hartvoll Ruud <andruud@chromium.org>
Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1435475}