Don't initialize the StackTraceExplorer tool window until it is invok…

…ed (#60973)

Fixes AB#1524181

Tested locally and command invocation works as expected. The initialization was causing package loads while the Roslyn package was initializing. We can wait until needed, and likely those packages are loaded by then anyways.

src/VisualStudio/Core/Def/RoslynPackage.cs

@@ -256,7 +256,7 @@ private async Task LoadComponentsBackgroundAsync(CancellationToken cancellationT
             await TaskScheduler.Default;
 
             await LoadInteractiveMenusAsync(cancellationToken).ConfigureAwait(true);
-            await LoadCallstackExplorerMenusAsync(cancellationToken).ConfigureAwait(true);
+            await LoadStackTraceExplorerMenusAsync(cancellationToken).ConfigureAwait(true);
 
             // Initialize keybinding reset detector
             await ComponentModel.DefaultExportProvider.GetExportedValue<KeybindingReset.KeybindingResetDetector>().InitializeAsync().ConfigureAwait(true);
@@ -284,7 +284,7 @@ private async Task LoadInteractiveMenusAsync(CancellationToken cancellationToken
                 .ConfigureAwait(true);
         }
 
-        private async Task LoadCallstackExplorerMenusAsync(CancellationToken cancellationToken)
+        private async Task LoadStackTraceExplorerMenusAsync(CancellationToken cancellationToken)
         {
             // Obtain services and QueryInterface from the main thread
             await JoinableTaskFactory.SwitchToMainThreadAsync(cancellationToken);

src/VisualStudio/Core/Def/StackTraceExplorer/StackTraceExplorerCommandHandler.cs

@@ -164,9 +164,6 @@ internal static void Initialize(OleMenuCommandService menuCommandService, Roslyn
 
             _instance = new(package);
 
-            // Initialize the window on startup
-            _instance.GetOrInitializeWindow();
-
             var menuCommandId = new CommandID(Guids.StackTraceExplorerCommandId, 0x0100);
             var menuItem = new MenuCommand(_instance.Execute, menuCommandId);
             menuCommandService.AddCommand(menuItem);