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Amir Panahandeh authoredAdds a test to validate state is preserved after reordering in `TwoDimensionalViewport` (reference: https://github.com/flutter/flutter/pull/141504#pullrequestreview-1837501775). - Fixes #130754 
Adds a test to validate state is preserved after reordering in `TwoDimensionalViewport` (reference: https://github.com/flutter/flutter/pull/141504#pullrequestreview-1837501775). - Fixes #130754
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