修复iOS点击支付提示未选择支付方式

lib/module/member/member_controller.dart

@@ -247,7 +247,7 @@ class MemberController extends BaseController implements PaymentStatusCallback {
       ToastUtil.show(StringName.memberPleaseChoiceGoods);
       return;
     }
-    if (selectedPayWay == null) {
+    if (selectedPayWay == null && !Platform.isIOS) {
       ToastUtil.show(StringName.memberPleaseChoicePayment);
       return;
     }