Use PasteButton on iOS 16

OTP/Views/EditKeyForm.swift

@@ -41,15 +41,25 @@ struct EditKeyForm: View {
             
             HStack {
                 TextField("Secret", text: $editedKey.secret)
-                Button {
-                    self.editedKey.secret = UIPasteboard.general.string ?? ""
-                } label: {
-                    Label("Paste", systemImage: "doc.on.clipboard")
-                        .labelStyle(.iconOnly)
-                        .foregroundColor(.accentColor)
+                if #available(iOS 16.0, *) {
+                    PasteButton(payloadType: String.self) { pasted in
+                        if let s = pasted.first {
+                            self.editedKey.secret = s
+                        }
+                    }
+                    .labelStyle(.iconOnly)
+                    .buttonBorderShape(.capsule)
+                } else {
+                    Button {
+                        self.editedKey.secret = UIPasteboard.general.string ?? ""
+                    } label: {
+                        Label("Paste", systemImage: "doc.on.clipboard")
+                            .labelStyle(.iconOnly)
+                            .foregroundColor(.accentColor)
+                    }
+                    .buttonStyle(.plain)
+                    .disabled(!UIPasteboard.general.hasStrings)
                 }
-                .buttonStyle(.plain)
-                .disabled(!UIPasteboard.general.hasStrings)
             }
             
             HStack {