Fix viewability for zero-sized lists - #58000
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Summary: VirtualizedList viewability only considered the scroll-axis viewport length. A horizontal list with zero height could therefore report items as viewable. Record the cross-axis length in the same scroll metrics snapshot and require both viewport dimensions to be non-zero for viewability. Changelog: [General][Fixed] - Prevent zero-sized lists from reporting viewable items Differential Revision: D116356139
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Summary:
VirtualizedList viewability only considered the scroll-axis viewport length. A horizontal list with zero height could therefore report items as viewable. Record the cross-axis length in the same scroll metrics snapshot and require both viewport dimensions to be non-zero for viewability.
Changelog:
[General][Fixed] - Prevent zero-sized lists from reporting viewable items
Differential Revision: D116356139