Aliaksandr Kalenik ccb543ebb8 LibWeb/CSS: Skip build of rule cache for inactive documents ...

Some websites (Reddit, for example) create lots of temporary documents
for fragment parsing. Before this change, we had to build a rule cache
for these documents just to determine whether there are :has, :defined,
or attribute selectors, while it should be safe to simply return `false`
right away.

2025-01-03 10:59:41 +01:00

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