Fix annotation issue of pipeline

Author: Shubham Jitiya

lib/src/day_view/day_view.dart

@@ -662,7 +662,7 @@ class DayViewState<T extends Object?> extends State<DayView<T>> {
   /// Default timeline builder this builder will be used if
   /// [widget.eventTileBuilder] is null
   ///
-  Widget _defaultTimeLineBuilder(date) => DefaultTimeLineMark(
+  Widget _defaultTimeLineBuilder(DateTime date) => DefaultTimeLineMark(
         date: date,
         timeStringBuilder: widget.timeStringBuilder,
         markingStyle: TextStyle(

lib/src/month_view/month_view.dart

@@ -598,11 +598,11 @@ class MonthViewState<T extends Object?> extends State<MonthView<T>> {
 
   /// Default cell builder. Used when [widget.cellBuilder] is null
   Widget _defaultCellBuilder(
-    date,
+    DateTime date,
     List<CalendarEventData<T>> events,
-    isToday,
-    isInMonth,
-    hideDaysNotInMonth,
+    bool isToday,
+    bool isInMonth,
+    bool hideDaysNotInMonth,
   ) {
     final themeColor = context.monthViewColors;