Summary:
Changelog: [internal]
For React Native classic the behaviour is identical.
# Problem
`ScrollView.scrollResponderScrollNativeHandleToKeyboard` is broken in new React Native renderer. The behaviour depends on race between two events, `measureLayout` and `keyboardWillShow` event. In the new renderer, `measureLayout` always wins because it is a synchronous call, unlike in React Native classic.
To fix this we can just delay execution by wrapping it in `setTimeout`, which puts it on the back of the queue.
Reviewed By: JoshuaGross
Differential Revision: D27705883
fbshipit-source-id: 7556f86978ca3ccd2fddf1eef2435af26b54f585