Use firebase's getInitialNotification function instead notifee's

[SERCHAT]

Hello community,
I have a question. I have an app that uses react native firebase and notifee. In my app notifee used only for local notifications and react native firebase for push notifications via firebase.
When I open a push notification on iOS device firebase's messaging().getInitialNotification() function returns me null all time I try to open the terminated app from notification. After a couple hours of research I found this is happening because notifee 7.0.1 handles these events.
I tried to handle notifee.getInitialNotification() method but when opens from firebase push notification it is returns already null and
after a random time called notifee.onForegroundEvent() handler. I want to know in my app opened from notification in a specific line because I should stop the flow and navigate the user to the related screen with this notification. This is all my history.
I have this questions now:
1- why notifee.getInitialNotification() returns null
2- how can I know without using notifee.onForegroundEvent() if my app opened from fcm notifiation

All of those happening on iOS devices.
packages:
"react": "18.2.0",
"react-native": "0.72.5",
"@notifee/react-native": "7.0.1",
"@react-native-firebase/app": "^18.5.0",
"@react-native-firebase/messaging": "^18.5.0",
thank you.