Possible to achieve `ScrollView` interactive keyboard dismissal in SwiftUI?

Yes,

add this code to init()

init() {
    // on a list:
    // UITableView.appearance().keyboardDismissMode = .interactive
    UIScrollView.appearance().keyboardDismissMode = .interactive
}

I add the code in my ContentView's onAppear modifier. It can be onDrag or .interactive depends on when you want to dismiss keyboard:

struct ContentView: View {
    var body: some View {
        Text("Hello World")
            .onAppear {
                UITableView.appearance().keyboardDismissMode = .onDrag
            }
    }
}

Also want to point out that jsbeginnerNodeJS's answer also works on any scrollable view, such as List. For example:

struct ContentView: View {
    @ObservedObject private var viewModel = GistsViewModel()

    var body: some View {
        NavigationView {
            VStack {
                SearchBar(text: $viewModel.searchText)

                List {
                    ForEach(viewModel.gists) { gist in
                        NavigationLink(destination: SafariView(url: gist.htmlURL)
                            .navigationBarTitle("")
                            .navigationBarHidden(true)) {
                                GistView(gist: gist)
                        }
                    }
                }
                .navigationBarTitle(Text("GitHub Gists"))
                .edgesIgnoringSafeArea(.bottom)
            }
        }
    }

    init() {
        UIScrollView.appearance().keyboardDismissMode = .interactive
    }
}