fix(HTTP Request Node): Do not create circular references in HTTP request node output (#8030)

## Summary
Remove unused `response.request` circular reference in http response
objects

## Related tickets
[PAY-1119](https://linear.app/n8n/issue/PAY-1119)

## Review / Merge checklist
- [x] PR title and summary are descriptive.

packages/nodes-base/nodes/HttpRequest/V2/HttpRequestV2.node.ts

@@ -1046,6 +1046,7 @@ export class HttpRequestV2 implements INodeType {
 			}
 
 			response = response.value;
+			delete response.request;
 
 			const options = this.getNodeParameter('options', itemIndex, {});