Context menu cleanup (#40584)

Addressing items in #40583

- [x] When navigating the context menu with the up/down keys, separators
should not be selectable.
- [x] [For context items with a super long title, we need to trim those
with an ellipsis. Ideally, we'd show a tooltip for just those
items.](https://github.com/microsoft/PowerToys/issues/40313)
- [x] [Context menu search bar text size doesn't update after changing
system text size](https://github.com/microsoft/PowerToys/issues/39648)
- [x] Weird "kick out" on first context menu item
- [x] [Primary button doesn't work if the command has more items (fix
regression)](https://github.com/microsoft/PowerToys/issues/40624)

Example of long context menu item titles with tooltips: (@niels9001,
look okay?)


https://github.com/user-attachments/assets/fc0a4034-9c22-48ee-a3f0-44fcc2f294a6

closes #40624

src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ContextMenu.xaml

@@ -20,6 +20,7 @@
     <UserControl.Resources>
         <ResourceDictionary>
             <cmdpalUI:KeyChordToStringConverter x:Key="KeyChordToStringConverter" />
+            <converters:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter" />
 
             <cmdpalUI:ContextItemTemplateSelector
                 x:Key="ContextItemTemplateSelector"
@@ -43,9 +44,18 @@
                         SourceKey="{x:Bind Icon}"
                         SourceRequested="{x:Bind help:IconCacheProvider.SourceRequested}" />
                     <TextBlock
+                        x:Name="TitleTextBlock"
                         Grid.Column="1"
+                        MaxWidth="200"
+                        HorizontalAlignment="Left"
                         VerticalAlignment="Center"
-                        Text="{x:Bind Title}" />
+                        Text="{x:Bind Title}"
+                        TextTrimming="WordEllipsis"
+                        TextWrapping="NoWrap">
+                        <ToolTipService.ToolTip>
+                            <ToolTip Content="{x:Bind Title}" Visibility="{Binding IsTextTrimmed, ElementName=TitleTextBlock, Converter={StaticResource BoolToVisibilityConverter}}" />
+                        </ToolTipService.ToolTip>
+                    </TextBlock>
                     <TextBlock
                         Grid.Column="2"
                         Margin="16,0,0,0"
@@ -74,10 +84,19 @@
                         SourceKey="{x:Bind Icon}"
                         SourceRequested="{x:Bind help:IconCacheProvider.SourceRequested}" />
                     <TextBlock
+                        x:Name="TitleTextBlock"
                         Grid.Column="1"
+                        MaxWidth="200"
+                        HorizontalAlignment="Left"
                         VerticalAlignment="Center"
                         Style="{StaticResource ContextItemTitleTextBlockCriticalStyle}"
-                        Text="{x:Bind Title}" />
+                        Text="{x:Bind Title}"
+                        TextTrimming="WordEllipsis"
+                        TextWrapping="NoWrap">
+                        <ToolTipService.ToolTip>
+                            <ToolTip Content="{x:Bind Title}" Visibility="{Binding IsTextTrimmed, ElementName=TitleTextBlock, Converter={StaticResource BoolToVisibilityConverter}}" />
+                        </ToolTipService.ToolTip>
+                    </TextBlock>
                     <TextBlock
                         Grid.Column="2"
                         Margin="16,0,0,0"
@@ -129,6 +148,7 @@
             x:Name="ContextFilterBox"
             x:Uid="ContextFilterBox"
             Margin="4"
+            IsTextScaleFactorEnabled="True"
             KeyDown="ContextFilterBox_KeyDown"
             PreviewKeyDown="ContextFilterBox_PreviewKeyDown"
             TextChanged="ContextFilterBox_TextChanged" />