Zachary D. Rowitsch d2347750d1 Fix code review findings: deferred absolutes in flex/grid/table, UA stylesheet, background-position, caption boundary ...

- Process deferred absolutes after flex/grid/table layout completes, fixing
  absolute children with bottom:0 inside flex/grid items (4 WPT tests fixed)
- Add td/th { vertical-align: top } to UA stylesheet to replace removed
  LayoutBox::new() default that was compensating for missing rule
- Fix single-value background-position with Y-only keyword (e.g. "top" alone
  now correctly produces x=center, y=top instead of x=top, y=center)
- Add caption as stop boundary in implicit table tag closing to prevent
  auto-closing across caption elements
- Strengthen deferred absolute test assertion from y > 0 to y > 100
- Triage 8 WPT known_fail tests with per-test specific reasons

WPT: +5 promoted (4 abspos flex tests + 1 other), -3 demoted (UA stylesheet/half-leading)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-25 23:16:39 -05:00

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