当应用程序在IOS的后台时，firebase.notifications().getInitialNotification()不起作用

import firebase from 'firebase/app';
import 'firebase/messaging';

if (firebase.apps.length === 0) {
  firebase.initializeApp({
    // Your Firebase config
  });
}

const messaging = firebase.messaging();

messaging.onBackgroundMessage((remoteMessage) => {
  console.log('[FCM] Background message received:', remoteMessage);
});

messaging.onMessage((remoteMessage) => {
  console.log('[FCM] Foreground message received:', remoteMessage);
  const initialNotification = messaging.getInitialNotification();
  if (initialNotification) {
    console.log('[FCM] Initial notification:', initialNotification);
    // Handle initial notification
  }
});

import { PermissionsAndroid } from 'react-native';

const requestNotificationPermission = async () => {
  try {
    const granted = await PermissionsAndroid.request(
      PermissionsAndroid.PERMISSIONS.ACCESS_NOTIFICATION_POLICY,
      {
        title: 'Notification Permission',
        message: 'This app needs access to send you notifications',
        buttonNeutral: 'Ask Me Later',
        buttonNegative: 'Cancel',
        buttonPositive: 'OK',
      }
    );
    if (granted === PermissionsAndroid.RESULTS.GRANTED) {
      console.log('Notification permission granted');
    } else {
      console.log('Notification permission denied');
    }
  } catch (err) {
    console.warn(err);
  }
};

requestNotificationPermission();

if (firebase.apps.length === 0) {
  firebase.initializeApp({
    apiKey: "YOUR_API_KEY",
    authDomain: "YOUR_AUTH_DOMAIN",
    projectId: "YOUR_PROJECT_ID",
    storageBucket: "YOUR_STORAGE_BUCKET",
    messagingSenderId: "YOUR_MESSAGING_SENDER_ID",
    appId: "YOUR_APP_ID",
  });
}