Summary:
In Fabric if you use a Pressable or PressableBackground and only provide an `onPress` but don't provide background color or anything else, the View might be flattened away and with it the event handlers.
We assume that if the product engineer is using a Pressable, they want it to do something in the View hierarchy, so force it to never be flattened.
Changelog: [Internal]
Reviewed By: shergin
Differential Revision: D22557026
fbshipit-source-id: 171c5b51e8d828fbb2816685d188286179a10af9