Allow data lists to include 0 or '' (falsey items)
Allow data lists to include 0 or '' (falsey items)

Summary:
Fixing https://github.com/facebook/react-native/issues/13578

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Closes https://github.com/facebook/react-native/pull/15419

Reviewed By: sahrens

Differential Revision: D5795844

Pulled By: tomasreimers

fbshipit-source-id: 4cdf97a2f5e83e38f4e12af771b512e7dddd212a

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