Add Thread.Sleep(100) to throttle REPL when it's non-interactive (#1694)

Co-authored-by: Colin Blaise <cblaise@immense.net>

Author: colinblaise

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

@@ -600,6 +600,8 @@ private void DoOneRepl(CancellationToken cancellationToken)
         {
             if (!_hostInfo.ConsoleReplEnabled)
             {
+                // Throttle the REPL loop with a sleep because we're not interactively reading input from the user.
+                Thread.Sleep(100);
                 return;
             }