如何在系统启动之前更改从firebase (FCM)收到的通知标题和正文？

<receiver
    android:name=".MyFirebaseMessagingReceiver"
    android:exported="true">
    <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT" />
    </intent-filter>
</receiver>

public class MyFirebaseMessagingService extends FirebaseMessagingService {
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // 获取通知标题和正文
        String title = remoteMessage.getNotification().getTitle();
        String body = remoteMessage.getNotification().getBody();

        // 修改通知标题和正文
        String modifiedTitle = "修改后的标题";
        String modifiedBody = "修改后的正文";

        // 创建一个新的通知消息
        RemoteMessage.Notification modifiedNotification = new RemoteMessage.Notification.Builder(modifiedTitle, modifiedBody)
                .build();

        // 替换原始通知消息的标题和正文
        remoteMessage = new RemoteMessage.Builder(remoteMessage)
                .setNotification(modifiedNotification)
                .build();

        // 调用父类的方法，继续处理通知消息
        super.onMessageReceived(remoteMessage);
    }
}

implementation 'com.google.firebase:firebase-messaging:20.1.0'