enhance: it's not necessary to change thread's culture

Author: love-linger

src/App.axaml.cs

@@ -195,17 +195,6 @@ app.Resources[localeKey] is not ResourceDictionary targetLocale ||
             if (app._activeLocale != null)
                 app.Resources.MergedDictionaries.Remove(app._activeLocale);
 
-            try
-            {
-                var culture = CultureInfo.GetCultureInfo(localeKey.Replace("_", "-"));
-                Thread.CurrentThread.CurrentUICulture = culture;
-                Thread.CurrentThread.CurrentCulture = culture;
-            }
-            catch
-            {
-                // Just ignore
-            }
-
             app.Resources.MergedDictionaries.Add(targetLocale);
             app._activeLocale = targetLocale;
         }