Fix NativeEventEmitter warning on Android

[daveyjones]

On Android, I'm getting the following warnings from this library:

WARN  `new NativeEventEmitter()` was called with a non-null argument without the required `addListener` method.
WARN  `new NativeEventEmitter()` was called with a non-null argument without the required `removeListeners` method.

I was able to resolve this by following the suggestion found here:

https://stackoverflow.com/a/70283349/1060679

Everything is working great after making this change and I'm no longer getting these warnings.