Add back unrelated changes

Author: SeeminglyScience

src/PowerShellEditorServices/Services/DebugAdapter/Handlers/ConfigurationDoneHandler.cs

@@ -25,6 +25,8 @@ internal class ConfigurationDoneHandler : IConfigurationDoneHandler
         // TODO: We currently set `WriteInputToHost` as true, which writes our debugged commands'
         // `GetInvocationText` and that reveals some obscure implementation details we should
         // instead hide from the user with pretty strings (or perhaps not write out at all).
+        //
+        // This API is mostly used for F5 execution so it requires the foreground.
         private static readonly PowerShellExecutionOptions s_debuggerExecutionOptions = new()
         {
             MustRunInForeground = true,

src/PowerShellEditorServices/Services/PowerShell/Execution/BlockingConcurrentDeque.cs

@@ -65,7 +65,7 @@ public bool TryTake(out T item)
 
         public IDisposable BlockConsumers() => PriorityQueueBlockLifetime.StartBlocking(_blockConsumersEvent);
 
-        public void Dispose() => ((IDisposable)_blockConsumersEvent).Dispose();
+        public void Dispose() => _blockConsumersEvent.Dispose();
 
         private class PriorityQueueBlockLifetime : IDisposable
         {

src/PowerShellEditorServices/Services/PowerShell/Host/PsesInternalHost.cs

@@ -944,6 +944,7 @@ private Runspace CreateInitialRunspace(InitialSessionState initialSessionState)
             return runspace;
         }
 
+        // NOTE: This token is received from PSReadLine, and it _is_ the ReadKey cancellation token!
         private void OnPowerShellIdle(CancellationToken idleCancellationToken)
         {
             IReadOnlyList<PSEventSubscriber> eventSubscribers = _mainRunspaceEngineIntrinsics.Events.Subscribers;

src/PowerShellEditorServices/Services/Template/TemplateService.cs

@@ -158,11 +158,12 @@ public async Task<bool> CreateFromTemplateAsync(
             _logger.LogTrace(
                 $"Invoking Plaster...\n\n    TemplatePath: {templatePath}\n    DestinationPath: {destinationPath}");
 
-            PSCommand command = new();
-            command.AddCommand("Invoke-Plaster");
-            command.AddParameter("TemplatePath", templatePath);
-            command.AddParameter("DestinationPath", destinationPath);
+            PSCommand command = new PSCommand()
+                .AddCommand("Invoke-Plaster")
+                .AddParameter("TemplatePath", templatePath)
+                .AddParameter("DestinationPath", destinationPath);
 
+            // This command is interactive so it requires the foreground.
             await _executionService.ExecutePSCommandAsync(
                 command,
                 CancellationToken.None,