async onChange with cancelation

OnChangeTask.swift

struct OnChangeTask<T: Equatable>: ViewModifier {
    let value: T
    let action: () async -> Void
    @State private var updateCount = 0
    
    func body(content: Content) -> some View {
        content
            .onChange(of: value) {
                updateCount += 1
            }
            .task(id: updateCount) {
                guard updateCount > 0 else { return }
                await action()
            }
    }
}

unlike task, this doesn't run with the initial value