Swift 6 actor deinit issue.

SingletonActorMRE.swift

import SwiftUI

struct ContentView: View {
    var body: some View {
        Button("increment") {
            Task {
                await CountActor.shared.increment()
            }
        }
    }
}

actor CountActor {
    static let shared = CountActor()

    var count = 0

    func increment() {
        Task { [unowned self] in
            try? await Task.sleep(for: .milliseconds(100))
            count += 1
            print("Count:", count)
        }
    }

    deinit {
        print(#function)
    }
}