How to Sandbox SwiftData Edits in .sheet

Is this the right way to pass data to a sheet for editing?

struct Detail: View {
   
...

    // The single atomic source of truth for our sheet presentation
    @State var editorConfig: EditorConfig?
    
    // Completely encapsulated local configuration package
    struct EditorConfig: Identifiable {
        var id: PersistentIdentifier {
            item.persistentModelID
        }
        let context: ModelContext
        let item: Item
    }
    
    var body: some View {
       ...
                    Button("Edit") {
                        // 1. Spin up a separate scratchpad container layer
                        let context = ModelContext(modelContext.container)
                        context.autosaveEnabled = false
                        
                        // 2. Safely resolve our model inside the new isolated playground
                        if let sandboxItem = context.model(for: item.persistentModelID) as? Item {
                            // 3. Package it up to trigger the sheet presentation
                            editorConfig = EditorConfig(context: context, item: sandboxItem)
                        }
                    }
                }
            }
            // 4. SwiftUI tracks value replacement accurately without ghost state bugs
            .sheet(item: $editorConfig) { config in
                // Inject the isolated context into the sheet's environment chain
                EditorView(item: config.item)
                    .environment(\.modelContext, config.context)
            }
    }
}