Fix maintainVisibleContentPosition calculations and add tests + docs [fixes #25239]#57294

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aarononeal wants to merge 14 commits into

aarononeal:fix/mvcp-corrections-and-tests

Commits on Jul 15, 2026

test(rn-tester): add maestro tests and refactor maintainVisibleContentPosition examples
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fix(virtualized-lists): clear cell metrics on orientation change and guard divide by zero
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fix(ios): MVCP correction fails when anchor view is deleted or recycled
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fix(android): MVCP scroll position not updating due to event throttle
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docs(virtualized-lists): document MVCP architecture, history, and test coverage
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fix: dispatch unthrottled scroll event on fling animation cancel
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fix: remove premature scroll events from MaintainVisibleScrollPositionHelper
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docs(virtualized-lists): fold MVCP history into DESIGN.md as design rationale
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docs: colocate MVCP test coverage comments into test source files
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fix(lint): address lint warnings
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style(rn-tester): improve button text styling
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test(lists): sanitize snapshots by removing _owner
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Commits on Jul 16, 2026

test(ScrollView): cleanup and type improvements
aarononeal
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Commits on Jul 17, 2026

fix(metrics): revise divide-by-zero branch in aggregator
aarononeal
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