remove property changed call in time zone validation (#3752)

Ryujinx.Ava/Ui/ViewModels/SettingsViewModel.cs

@@ -295,8 +295,6 @@ namespace Ryujinx.Ava.Ui.ViewModels
             if (_validTzRegions.Contains(location))
             {
                 TimeZone = location;
-
-                OnPropertyChanged(nameof(TimeZone));
             }
         }
 

Ryujinx.Ava/Ui/Windows/SettingsWindow.axaml.cs

@@ -37,7 +37,7 @@ namespace Ryujinx.Ava.Ui.Windows
             InitializeComponent();
             Load();
 
-            FuncMultiValueConverter<string, string> converter = new(parts => string.Format("{0}  {1}   {2}", parts.ToArray()));
+            FuncMultiValueConverter<string, string> converter = new(parts => string.Format("{0}  {1}   {2}", parts.ToArray()).Trim());
             MultiBinding tzMultiBinding = new() { Converter = converter };
             tzMultiBinding.Bindings.Add(new Binding("UtcDifference"));
             tzMultiBinding.Bindings.Add(new Binding("Location"));