fix: 更新日志与公告滚动条过于贴近窗口边缘

fix #13295

src/MaaWpfGui/Views/UI/AnnouncementView.xaml

@@ -59,6 +59,7 @@
             <hc:ScrollViewer
                 x:Name="ScrollViewer"
                 Grid.Row="0"
+                Margin="10,5"
                 IsInertiaEnabled="True">
                 <hc:Interaction.Triggers>
                     <hc:EventTrigger EventName="ScrollChanged">
@@ -66,7 +67,6 @@
                     </hc:EventTrigger>
                 </hc:Interaction.Triggers>
                 <mdxam:MarkdownScrollViewer
-                    Margin="10,0,10,0"
                     d:Markdown="#Test&#10;This is a test text.&#10;&#10;~~This is a test text~~&#10;&#10;*This is a test text*&#10;&#10;**This is a test text**"
                     ClickAction="SafetyOpenBrowser"
                     Markdown="{Binding SelectedAnnouncementSection.Content}"

src/MaaWpfGui/Views/UI/VersionUpdateView.xaml

@@ -19,7 +19,7 @@
     d:DataContext="{d:DesignInstance {x:Type ui:VersionUpdateViewModel}}"
     Icon="../../newlogo.ico"
     mc:Ignorable="d">
-    <hc:ScrollViewer IsInertiaEnabled="True">
+    <hc:ScrollViewer Margin="10,5" IsInertiaEnabled="True">
         <Grid Background="{DynamicResource MdXamlBackground}">
             <Grid.RowDefinitions>
                 <RowDefinition Height="50" />
@@ -49,7 +49,6 @@
 
             <mdxam:MarkdownScrollViewer
                 Grid.Row="1"
-                Margin="10,10,10,0"
                 ClickAction="SafetyOpenBrowser"
                 Markdown="{Binding UpdateInfo}"
                 PreviewMouseWheel="{s:Action RouteMouseWheelToParent,