optimized performance

src/Shared/HandyControl_Shared/Controls/Other/NotifyIcon.cs

@@ -335,7 +335,7 @@ namespace HandyControl.Controls
         public bool IsBlink
         {
             get => (bool)GetValue(IsBlinkProperty);
-            set => SetValue(IsBlinkProperty, value);
+            set => SetValue(IsBlinkProperty, ValueBoxes.BooleanBox(value));
         }
 
         private void DispatcherTimerBlinkTick(object sender, EventArgs e)