Add prepareForReuse to RCTSafeAreaViewComponentView

Summary:
Changelog: [internal]

As part of recycle, we should delete state. This is a common pattern used in other components as well.

Reviewed By: shergin

Differential Revision: D21348782

fbshipit-source-id: a5dee2f4ccee9b19498db31dab1983d8879dca71

React/Fabric/Mounting/ComponentViews/SafeAreaView/RCTSafeAreaViewComponentView.mm

@@ -86,6 +86,12 @@ using namespace facebook::react;
   [self _updateStateIfNecessary];
 }
 
+- (void)prepareForRecycle
+{
+  [super prepareForRecycle];
+  _state.reset();
+}
+
 + (ComponentDescriptorProvider)componentDescriptorProvider
 {
   return concreteComponentDescriptorProvider<SafeAreaViewComponentDescriptor>();