Empty `safeAreaInset` modifier breaks `Map` zoom region

Reported as FB20357097

In SwiftUI, an empty .safeAreaInset modifier attached to a Map causes the map to become zoomed out to planet level.

Minimal reproduction:

import SwiftUI
import MapKit

@main
struct map_region_safe_area_inset_bugApp: App {
    var body: some Scene {
        WindowGroup {
            Map {
                // Any Map content
                MapCircle(center: .init(latitude: 35.6895, longitude: 139.6917), radius: 1000)
            }
            .safeAreaInset(edge: .top) {
                // No content, `EmptyView()`, `Color.clear`
            }
        }
    }
}

Note: ZStack { } inside the safeAreaInset prevents the bug.