ui: Disallow checking for updates while emulation active (#3886)

* Disallow updating while game is running

* Reflected change on Avalonia

* Git has gone wonky

* Fix accidental indent

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

@@ -266,6 +266,7 @@ namespace Ryujinx.Ava.Ui.Windows
                     return;
                 }
 
+                CanUpdate = false;
                 ViewModel.LoadHeading = string.IsNullOrWhiteSpace(titleName) ? string.Format(LocaleManager.Instance["LoadingHeading"], AppHost.Device.Application.TitleName) : titleName;
                 ViewModel.TitleName   = string.IsNullOrWhiteSpace(titleName) ? AppHost.Device.Application.TitleName : titleName;
 
@@ -371,6 +372,7 @@ namespace Ryujinx.Ava.Ui.Windows
                 ViewModel.ShowContent = true;
                 ViewModel.ShowLoadProgress = false;
                 ViewModel.IsLoadingIndeterminate = false;
+                CanUpdate = true;
                 Cursor = Cursor.Default;
 
                 if (MainContent.Content != _mainViewContent)

Ryujinx/Ui/MainWindow.cs

@@ -862,6 +862,7 @@ namespace Ryujinx.Ui
 
                 _gameLoaded           = true;
                 _actionMenu.Sensitive = true;
+                UpdateMenuItem.Sensitive = false;
 
                 _lastScannedAmiiboId = "";
 
@@ -1333,6 +1334,7 @@ namespace Ryujinx.Ui
 
             _pauseEmulation.Sensitive = false;
             _resumeEmulation.Sensitive = false;
+            UpdateMenuItem.Sensitive = true;
             RendererWidget?.Exit();
         }