Summary:
Gestures now work with native animations so we can enable it, it is also not needed anymore to check if the native module exists since we print a warning in the Animated module now.
**Test plan**
Tested that animations and gesture work properly in the UIExplorer example. Also been using native animations with NavigationExperimental (ex-nav) in an app for a while.
Closes https://github.com/facebook/react-native/pull/11234
Differential Revision: D4321763
Pulled By: ericvicenti
fbshipit-source-id: 255bed5bfed3b93bdc10939b5a03d4d8b00ceade
4220063f84