Remove hardcoded active:false from stress test workflow creation

Let n8n use its default activation behavior instead of forcing
workflows to be inactive on creation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Zie619

n8n-node/stress-test/load-workflows.ts

@@ -31,7 +31,6 @@ async function createWorkflow(workflow: (typeof ALL_WORKFLOWS)[number]): Promise
     nodes: workflow.nodes,
     connections: workflow.connections,
     settings: workflow.settings || {},
-    active: false,
   });
 
   const resp = await fetch(`${BASE_URL}/api/v1/workflows`, {