Binding_InheritActorContext.swift

import SwiftUI

@globalActor
actor MyActor {
    let queue = DispatchSerialQueue(label: "Test")
    nonisolated var unownedExecutor: UnownedSerialExecutor { queue.asUnownedSerialExecutor() }
    static let shared = MyActor()
    var count: Int = 0
    
    func binding() -> Binding<Int> {
        Binding { 
            return self.count
        } set: { newValue in
            MainActor.assertIsolated() // ???
            print(newValue)
            self.count = newValue
        }
    }
}

struct ContentView: View {
    @State private var binding: Binding<Int>?
    
    var body: some View {
        Group {
            if let binding {
                ChildView(count: binding)
            } else {
                Color.clear
            }
        }
        .task {
            binding = await MyActor.shared.binding()
        }
    }
}

struct ChildView: View {
    @Binding private var count: Int
    
    init(count: Binding<Int>) {
        _count = count
    }
    
    var body: some View {
        Button("Trigger") { 
            count += 1
        }
    }
}