Aliaksandr Kalenik 84ecaaa75c LibWeb: Limit sibling style invalidation by max distance ...

If an element is affected only by selectors using the direct sibling
combinator `+`, we can calculate the maximum invalidation distance and
use it to limit style invalidation. For example, the selector
`.a + .b + .c` has a maximum invalidation distance of 2, meaning we can
skip invalidating any element affected by this selector if it's more
than two siblings away from the element that triggered the style
invalidation.

This change results in visible performance improvement when hovering
PR list on GitHub.

2025-03-10 18:56:55 +01:00

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