fix: event name for unread count listener

Author: dawidvdh

android/src/main/java/com/intercom/reactnative/IntercomEventEmitter.java

@@ -20,7 +20,7 @@
 public class IntercomEventEmitter extends ReactContextBaseJavaModule {
 
   private static final String NAME = "IntercomEventEmitter";
-  private static final String UNREAD_COUNT_CHANGE_NOTIFICATION = "IntercomUnreadCountDidChange";
+  private static final String UNREAD_COUNT_CHANGE_NOTIFICATION = "IntercomUnreadConversationCountDidChangeNotification";
   private int activeListenersCount = 0;
   private final UnreadConversationCountListener unreadConversationCountListener = new UnreadConversationCountListener() {
     @Override