Seal INavigationProvider, IAsyncResultFilter, IPermissionProvider, St…

…artupBase, IRecipeStepHandler, DisplayDriver, Controller classes.

Integration/Controllers/AutoMockerController.cs

@@ -12,7 +12,7 @@ namespace Lombiq.Tests.Integration.Controllers;
 /// A controller or base class for testing features on controllers. Its HTTP context, host environment and service
 /// providers are initialized during construction.
 /// </summary>
-public class AutoMockerController : Controller
+public sealed class AutoMockerController : Controller
 {
     public string Environment { get; set; } = Environments.Development;