fix: Harden Dispose

Author: linkdotnet

src/bunit/Rendering/BunitRenderer.cs

@@ -234,6 +234,11 @@ public Task DisposeComponents()
 				disposalTasks.Clear();
 			});
 
+			if (returnTask.IsFaulted && returnTask.Exception is not null)
+			{
+				HandleException(returnTask.Exception);
+			}
+
 			rootComponents.Clear();
 			AssertNoUnhandledExceptions();
 		}