ux: enable horizontal scroll in AI assistant view

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Resources/Locales/en_US.axaml

@@ -20,7 +20,6 @@
   <x:String x:Key="Text.AIAssistant" xml:space="preserve">AI Assistant</x:String>
   <x:String x:Key="Text.AIAssistant.Regen" xml:space="preserve">RE-GENERATE</x:String>
   <x:String x:Key="Text.AIAssistant.Tip" xml:space="preserve">Use AI to generate commit message</x:String>
-  <x:String x:Key="Text.AIAssistant.Use" xml:space="preserve">APPLY AS COMMIT MESSAGE</x:String>
   <x:String x:Key="Text.App.Hide" xml:space="preserve">Hide SourceGit</x:String>
   <x:String x:Key="Text.App.ShowAll" xml:space="preserve">Show All</x:String>
   <x:String x:Key="Text.Apply" xml:space="preserve">Patch</x:String>

src/Views/AIAssistant.axaml.cs

@@ -47,8 +47,7 @@ public string Content
         {
             IsReadOnly = true;
             ShowLineNumbers = false;
-            WordWrap = true;
-            HorizontalScrollBarVisibility = ScrollBarVisibility.Disabled;
+            HorizontalScrollBarVisibility = ScrollBarVisibility.Auto;
             VerticalScrollBarVisibility = ScrollBarVisibility.Auto;
 
             TextArea.TextView.Margin = new Thickness(4, 0);