Break on user-unhandled exceptions (#255)

Author: dotMorten

src/Reactor/Hosting/ReactorHost.cs

@@ -570,6 +570,7 @@ void RecoverFromHookOrder(HookOrderException ex, RenderContext ctx, string mode)
                 }
                 catch (Exception ex)
                 {
+                    Debugger.BreakForUserUnhandledException(ex);
                     _logger?.LogError(ex, "Component Render() threw");
                     ShowErrorFallback(ex);
                     return;