Aliaksandr Kalenik 327dc8e82a LibWeb: Avoid full tree traversal for non-subject :has() invalidation ...

Instead of checking all elements in a document for containment in
`:has()` invalidation set, we could narrow this down to ancestors and
ancestor siblings, like we already do for subject `:has()` invalidation.

This change brings great improvement on GitHub that has selectors with
non-subject `:has()` and sibling combinators (e.g., `.a:has(.b) ~ .c`)
which prior to this change meant style invalidation for whole document.

2025-02-13 16:24:51 +01:00

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