Correctly propagate prepareToRecycleView return value (#49858)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49858

`prepareToRecycleView` returns nullable, since we may decide a view is not recyclable. We should respect that and return the view returned by super.

Changelog: [Internal]

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Reviewed By: fabriziocucci

Differential Revision: D70696246

fbshipit-source-id: a8e12320611a3b6a3d05353e4b7556c4da416aea