SwiftUI, Notification about the end, the cancellation of a drag operation

I have implemented drag and drop for one view. Now I want to change the state of the source view at the start of a drag operation and change the state back at completion or cancellation. The following example code should illustrate this.

import UniformTypeIdentifiers

struct DragableView: View {
    @State var isActiveDropTarget: Bool = false
    @State var isDragged: Bool = false

    var body: some View {
        Text("Hello world")
            .overlay(RoundedRectangle(cornerRadius: 8)
                        .fill(Color.accentColor.opacity(0.1))
                        .opacity(isActiveDropTarget ? 1.0 : 0.0))
            .opacity(isDragged ? 0.5 : 1)
        .onDrag {
            isDragged = true
            return NSItemProvider(object: "Test" as NSString)
        }
        .onDrop(of: [UTType.data], delegate: self)
    }
}

extension DragableView: DropDelegate
{
    func dropEntered(info: DropInfo)
    {
        isActiveDropTarget = true
    }
    
    func dropExited(info: DropInfo)
    {
        isActiveDropTarget = false
    }

    func performDrop(info: DropInfo) -> Bool
    {
        isActiveDropTarget = false
        /* Handle drop
         ...
         */
        return true
    }
}

The problem with the current implementation is that I do notice when a drag operation starts (.onDrag is called), but I don't know when the operation ends.