Fix Scrollblocking on Android

Summary:
Without allowing Native Responder on Android, ListView get's Deadlocked while trying to scroll. This happens as soon as a PanResponder fires.

This Commit prevents this Issue and the iOS Optimization for Locking / Unlocking Listview Scrolls does a good job on Android too. So there's no need to prevent the Native Responder.

**Test plan (required)**

Compile on Android in Production Mode and try to scroll before and after this change.
Closes https://github.com/facebook/react-native/pull/8556

Differential Revision: D4438057

Pulled By: hramos

fbshipit-source-id: 05f3b7e6b4e49f5c941c7e1ce72c8bf6d66a9a28

Libraries/Experimental/SwipeableRow/SwipeableRow.js

@@ -134,6 +134,7 @@ const SwipeableRow = React.createClass({
       onPanResponderRelease: this._handlePanResponderEnd,
       onPanResponderTerminationRequest: this._onPanResponderTerminationRequest,
       onPanResponderTerminate: this._handlePanResponderEnd,
+      onShouldBlockNativeResponder: (event, gestureState) => false,
     });
   },