Fix RadTimePicker sample

Author: mbaykalos

OpenSilver.Samples.TelerikUI/OpenSilver.Samples.TelerikUI/Samples/Controls/RadTimePicker/RadTimePicker_Demo.xaml

@@ -13,7 +13,9 @@
                 <RowDefinition Height="Auto"/>
             </Grid.RowDefinitions>
             <ContentControl Content="RadTimePicker" Foreground="#FFD59851" Background="#FFBFA383" Style="{StaticResource HeaderControl_Style}"/>
-            <controls:RadTimePicker Grid.Row="1" Width="150" CustomLayout="True"/>
+            <StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
+                <controls:RadTimePicker Width="150" />
+            </StackPanel>
             <Button Grid.Row="2" Content="VIEW SOURCE..." Click="ButtonViewSource_Click" Background="#FF6F7DFF" Style="{StaticResource ButtonViewSource_Style}"/>
         </Grid>
     </ContentControl>