test(engine): Run the EmailSend SMTP spec on engine v2 (#40455)

Co-authored-by: Claude Opus 5 (1M context) <[email protected]>

packages/quality/testing/playwright/tests/e2e/nodes/email-send-node.spec.ts

@@ -3,7 +3,7 @@ import { test, expect } from '../../../fixtures/base';
 test.use({ capability: 'email' });
 
 test(
-	'EmailSend node sends via SMTP',
+	'EmailSend node sends via SMTP @engine:v2',
 	{
 		annotation: [{ type: 'owner', description: 'NODES' }],
 	},
@@ -79,6 +79,9 @@ test(
 			'Workflow executed successfully',
 		);
 
+		// The run starts from the canvas, so check the engine the execution reached.
+		await api.workflows.assertLatestExecutionRoutedToEngine(workflowId);
+
 		const msg = await mailpit.waitForMessage({ to: toEmail, subject });
 
 		expect(msg).toBeTruthy();