Summary:
Add native support on iOS and Android for `Animated.diffClamp` that was added in #9419.
**Test plan**
Tested that it works properly using the native animations UIExplorer example.
Closes https://github.com/facebook/react-native/pull/9691
Differential Revision: D3813440
fbshipit-source-id: 48a3ecddf3708fa44b408954d3d8133ec8537f21
Janic Duplessis