Feature Request: support `Tab`

[nh7a]

tabView().count for the view below returns 1 instead of 3. Tab is a new (iOS 18) component for TabView.

TabView {
    Tab("Received", systemImage: "tray.and.arrow.down.fill") {
        ReceivedView()
    }
    Tab("Sent", systemImage: "tray.and.arrow.up.fill") {
        SentView()
    }
    Tab("Account", systemImage: "person.crop.circle.fill") {
        AccountView()
    }
}