iOS app - build configuration for background notifications.

Hello Expo team,
-managed flow: expo sdk ver:43.0.2
-eas-cli/0.38.3 win32-x64 node-v16.13.0

I am working on receiving push notifications. For that, I am using the native components:
@react-native-firebase/app”: “^13.0.1”,
@react-native-firebase/messaging”: “^13.0.1”, (uses HeadlessJS on Android)

I am using EAS to build by iPhone archive. The build is successful, and I could see Push Notifications configured. They seem to work pretty well on Android for all cases- when then app is in foreground, background or killed.

However on iOS, I am able to receive push notifications when the app is in foreground, but not when the app is in background or killed.

I believe this is because an application-level configuration for Background modes using Xcode is required as mentioned @Local and Remote Notification Programming Guide: Creating the Remote Notification Payload

as well as @Push Notifications and In-App Messaging with OneSignal and Expo | by George Deglin | Exposition

Wanted to ask if there is any such configuration available in app.json or eas.json? If not, is it a big ask to implement?

Your inputs appreciated, thank you.