Andreas Kling c3059701b0 LibWeb: Avoid style invalidation when entire document has invalid style ...

If the entire document is invalidated, we know a full style update is
coming soon, and there's no need to try and invalidate a smaller part.

This avoids a *lot* of work on some pages. As an example, we are able to
skip ~1.5 million style invalidations on https://html.spec.whatwg.org/

2024-01-13 11:49:04 +01:00

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