Have a data message for Android and normal notification for IOS in single FCM request - firebase-cloud-messaging

Question

Currently, I have different ways to handle notifications depending on if the system is Android or IOS, for Android, I send a data-only notification and create a local notification from it.
For IOS, since data-only notifications have no guarantee that they will be retrieved if the app is closed, I send a normal notification.
What I'm trying to do is having both notifications using the same FCM API call, here is my current json:
{
"data": {
"click_action": "FLUTTER_NOTIFICATION_CLICK",
"d": "my_data",
},
"apns": {
"headers": {
"apns-priority": "10"
},
"payload": {
"aps": {
"alert": {
"title": "my title",
"body": "my body"
}
}
}
},
"priority": "high",
"registration_ids": [...],
"time_to_live":86400
}
So, what I expected from this request is that for android it would create a data only notification using:
{
"data": {
"click_action": "FLUTTER_NOTIFICATION_CLICK",
"d": "my_data",
}
}
And for IOS, it would create a normal notification using:
{
"notification": {
"title": "my title",
"body": "my body",
}
}
This works for Android, but I don't receive this notification as a normal notification on IOS.. Shouldn't the apns payload be used for IOS in this case?