MapView does not render until after system alert (e.g., notification permission) is dismissed

@maios is already working on this.

Since Jun 9, 2025.

## Environment

- Xcode version: All
- iOS version: All
- Devices affected: All
- Maps SDK Version: All

## Observed behavior and steps to reproduce

When initializing and adding a MapView inside viewDidAppear, the map does not appear until after a system alert (like the UNUserNotificationCenter permission prompt) is dismissed. This is inconsistent with system frameworks like MKMapView, which renders immediately even while such alerts are visible.

1. In viewDidAppear, request notification permission and add the MapView:
```
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)

UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { _, _ in }

let mapView = MapView(frame: view.bounds)
mapView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(mapView)

NSLayoutConstraint.activate([
mapView.topAnchor.constraint(equalTo: view.topAnchor),
mapView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
mapView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
mapView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
])
}
```
2. Run the app for the first time so the notification permission alert is triggered.
3. Observe that the MapView does not appear until after the alert is dismissed.

## Expected behavior

Mapbox’s MapView should render immediately after being added to the view hierarchy, even when a system alert is visible — similar to how MKMapView behaves.

## Additional links and references

https://github.com/user-attachments/assets/8982d69e-5baa-4daa-aba0-d48a5d053e4f