[Launcher]Port from WPF-UI to .NET 9 WPF (#36215)

* Initial implementation

* Fix fluent style

* Fix no endline

* Update expect.txt

* Fix formatting

* Fix light theme looking bad on Windows 10

* fix formatting

* test change

* Now really fixed W10

* Add a comment

* Fix typos

* Fix spellcheck errors

* Fix spellcheck pattern for websites

* Change patterns for spellcheck in the right file

* Fix XAML styling

* Fix contrast colors on W11

* Fix formatting

* Removed emty line

* Fix formatting

* Added comment to fluentHC file

* fix comment

* Fix Windows10 again.
Adress feedback.

* W11 fix chaning from high contrast to normal not having correct background

* W10 Fix high contrast not working after switching from light/dark moed

* Address feedback

* Fix formatting

* Second W11 fix chaning from high contrast to normal not having correct background

src/modules/launcher/PowerLauncher/SettingsReader.cs

@@ -159,7 +159,7 @@ namespace PowerLauncher
                     if (_settings.Theme != overloadSettings.Properties.Theme)
                     {
                         _settings.Theme = overloadSettings.Properties.Theme;
-                        _themeManager.SetTheme(true);
+                        _themeManager.UpdateTheme();
                     }
 
                     if (_settings.StartupPosition != overloadSettings.Properties.Position)