unregistering Receiver on LocalBroadcastManager

1. RN -0.52 , react-native-fcm - 11.3.1
2. Using android emulator and nexus 5 with 7.1.1
3. background and foreground

Awesome project @evollu 🥇 Kudos for your efforts 👍

Thought this might not be an issue but might be a reason for receiving push notifications twice in some cases. Please clarify.
In the file FIRMessagingModule.java, registerMessageHandler() method, we are registering receiver on react context and not unregistering when app is unmounted.
Can we create a @ReactMethod and call it to unregister the receiver from a higher order js component?