[plcs#8888] 单点触摸

lib/widget/month_view.dart

@@ -227,13 +227,17 @@ class ItemContainerState extends State<ItemContainer> {
             }
             calendarProvider.selectedDateList.add(dateModel);
           }
+          if (configuration.calendarSelect != null) {
             configuration.calendarSelect(dateModel);
+          }
 
           //多选也可以弄这些单选的代码
           calendarProvider.selectDateModel = dateModel;
         } else {
           calendarProvider.selectDateModel = dateModel;
+          if (configuration.calendarSelect != null) {
             configuration.calendarSelect(dateModel);
+          }
 
           //单选需要刷新上一个item
           if (calendarProvider.lastClickItemState != this) {