Fix light theme in first time setup

CHANGELOG.md

@@ -21,6 +21,7 @@ and this project adheres to [Semantic Versioning 2.0](https://semver.org/spec/v2
 - Fixed model index startup errors when `./Models` contains unknown custom folder names
 - Fixed ストップ button being cut off in Japanese translation 
 - Fixed update progress freezing in some cases
+- Fixed light theme being default in first time setup window
 
 ## v2.4.6
 ### Added

StabilityMatrix.Avalonia/App.axaml

@@ -4,7 +4,7 @@
              xmlns:local="using:StabilityMatrix.Avalonia"
              xmlns:idcr="using:Dock.Avalonia.Controls.Recycling"
              xmlns:styling="clr-namespace:FluentAvalonia.Styling;assembly=FluentAvalonia"
-             RequestedThemeVariant="Default">
+             RequestedThemeVariant="Dark">
              <!-- "Default" ThemeVariant follows system theme variant. "Dark" or "Light" are other available options. -->
 
     <Application.DataTemplates>

StabilityMatrix.Avalonia/Views/FirstLaunchSetupWindow.axaml.cs

@@ -1,4 +1,6 @@
-using System.Diagnostics.CodeAnalysis;
+using System;
+using System.Diagnostics.CodeAnalysis;
+using Avalonia;
 using Avalonia.Interactivity;
 using Avalonia.Markup.Xaml;
 using FluentAvalonia.UI.Controls;