ControlCatalog: Update ContextMenuPage and MenuPage samples

samples/ControlCatalog/App.xaml

@@ -11,7 +11,7 @@
       <Setter Property="FontSize" Value="14" />
     </Style>
     <Style Selector="TextBlock.h3">
-      <Setter Property="FontSize" Value="10" />
+      <Setter Property="FontSize" Value="12" />
     </Style>
     <StyleInclude Source="/SideBar.xaml"/>
   </Application.Styles>

samples/ControlCatalog/Pages/ContextMenuPage.xaml

@@ -14,13 +14,14 @@
                     Padding="48,48,48,48">
                 <Border.ContextMenu>
                     <ContextMenu>
-                        <MenuItem Header="Standard _Menu Item"/>
+                        <MenuItem Header="Standard _Menu Item" InputGesture="Ctrl+A" />
+                        <MenuItem Header="_Disabled Menu Item" IsEnabled="False" InputGesture="Ctrl+D" />
                         <Separator/>
                         <MenuItem Header="Menu with _Submenu">
                             <MenuItem Header="Submenu _1"/>
                             <MenuItem Header="Submenu _2"/>
                         </MenuItem>
-                        <MenuItem Header="Menu Item with _Icon">
+                        <MenuItem Header="Menu Item with _Icon" InputGesture="Ctrl+Shift+B">
                             <MenuItem.Icon>
                                 <Image Source="/Assets/github_icon.png"/>
                             </MenuItem.Icon>

samples/ControlCatalog/Pages/MenuPage.xaml

@@ -16,8 +16,8 @@
                 <TextBlock Classes="h3" Margin="4 8">Defined in XAML</TextBlock>
                 <Menu>
                     <MenuItem Header="_First">
-                        <MenuItem Header="Standard _Menu Item" InputGesture="Ctrl+A"/>
-                        <MenuItem Header="_Disabled Menu Item" IsEnabled="False" />
+                        <MenuItem Header="Standard _Menu Item" InputGesture="Ctrl+A" />
+                        <MenuItem Header="_Disabled Menu Item" IsEnabled="False" InputGesture="Ctrl+D" />
                         <Separator/>
                         <MenuItem Header="Menu with _Submenu">
                             <MenuItem Header="Submenu _1"/>

src/Avalonia.Themes.Fluent/ContextMenu.xaml

@@ -9,6 +9,8 @@
       <Border.ContextMenu>
         <ContextMenu>
           <MenuItem Header="Standard _Menu Item" />
+          <MenuItem Header="Disabled"
+                    IsEnabled="False" />
           <Separator />
           <MenuItem Header="Menu with _Submenu">
             <MenuItem Header="Submenu _1" />