fix(perf): Apply some performance optimizations.#16708

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MayaKirova wants to merge 6 commits intomasterfrom

mkirova/performance-optimizations

Commits on Jan 8, 2026

fix(perf): Apply some performance optimizations.

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Commits on Jan 9, 2026

chore(*): MInor tweaks to scroll handler.

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chore(*): Minor tweak for verticalScrollHandler.

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Commits on Jan 12, 2026

chore(*): Add style writes in afterNextRender's write callback.

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chore(*): Clean performance observer and custom styles.

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chore(*): Add btn to scroll 100 times in the grids and measure long tasks.

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