Update reset annotation

Author: aruljenithberkmans

maui/src/Charts/SfCartesianChart.cs

@@ -1959,6 +1959,17 @@ void ScheduleUpdateChart()
 
         void ResetAnnotation()
         {
+            int i = _annotationLayout.Children.Count - 1;
+            if (i < 0) return; 
+
+            do
+            {
+                if (_annotationLayout.Children[i] is not AnnotationDrawableView view)
+                {
+                    _annotationLayout.Children.RemoveAt(i);
+                }
+                i--;
+            } while (i >= 0);
         }
 
         void RemoveAnnotation(int index, object item)