Chinese language treatment for WinUI bug.

Wino.Mail.WinUI/Views/Mail/ComposePage.xaml

@@ -35,7 +35,7 @@
                 Background="Transparent"
                 ColumnSpacing="3">
                 <Grid.ContextFlyout>
-                    <MenuFlyout>
+                    <coreControls:WinoMenuFlyout>
                         <MenuFlyoutItem
                             Click="OpenAttachment_Click"
                             CommandParameter="{x:Bind}"
@@ -44,7 +44,7 @@
                             Click="SaveAttachment_Click"
                             CommandParameter="{x:Bind}"
                             Text="{x:Bind domain:Translator.Buttons_Save}" />
-                    </MenuFlyout>
+                    </coreControls:WinoMenuFlyout>
                 </Grid.ContextFlyout>
                 <ToolTipService.ToolTip>
                     <ToolTip Content="{x:Bind FileName}" />

Wino.Mail.WinUI/Views/Mail/MailListPage.xaml.cs

@@ -27,6 +27,7 @@ using Wino.Core.Domain.Models.Navigation;
 using Wino.Mail.ViewModels.Data;
 using Wino.Mail.ViewModels.Messages;
 using Wino.Mail.WinUI;
+using Wino.Mail.WinUI.Controls;
 using Wino.Mail.WinUI.Controls.ListView;
 using Wino.Mail.WinUI.Helpers;
 using Wino.Mail.WinUI.Interfaces;
@@ -318,7 +319,7 @@ public sealed partial class MailListPage : MailListPageAbstract,
         double y)
     {
         var source = new TaskCompletionSource<MailContextAction?>();
-        var flyout = new MenuFlyout();
+        var flyout = new WinoMenuFlyout();
 
         foreach (var action in availableActions)
         {

Wino.Mail.WinUI/Views/Mail/MailRenderingPage.xaml

@@ -80,7 +80,7 @@
                         <ToolTip Content="{x:Bind FileName}" />
                     </ToolTipService.ToolTip>
                     <Grid.ContextFlyout>
-                        <MenuFlyout Placement="Right">
+                        <coreControls:WinoMenuFlyout Placement="Right">
                             <MenuFlyoutItem
                                 Click="OpenAttachment_Click"
                                 CommandParameter="{x:Bind}"
@@ -97,7 +97,7 @@
                                     <PathIcon Data="{StaticResource SaveAttachmentPathIcon}" />
                                 </MenuFlyoutItem.Icon>
                             </MenuFlyoutItem>
-                        </MenuFlyout>
+                        </coreControls:WinoMenuFlyout>
                     </Grid.ContextFlyout>
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="40" />