move NativeModule initialization off UI thread

Summary: Initializing natives modules on the UI thread blocks the JS thread if the UI thread is busy.

Reviewed By: yungsters

Differential Revision: D4611211

fbshipit-source-id: cd4fb9cb5e52a478b6692b784cfd9e3bf34c0d34

ReactAndroid/src/main/java/com/facebook/react/NativeModuleRegistryBuilder.java

@@ -139,6 +139,9 @@ public class NativeModuleRegistryBuilder {
       }
     }
 
-    return new NativeModuleRegistry(mModules, batchCompleteListenerModules);
+    return new NativeModuleRegistry(
+      mReactApplicationContext,
+      mModules,
+      batchCompleteListenerModules);
   }
 }