fix(HTTP Request Tool Node): Fix the undefined response issue when authentication is enabled (#11343)

Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>

packages/@n8n/nodes-langchain/nodes/tools/ToolHttpRequest/ToolHttpRequest.node.ts

@@ -281,6 +281,7 @@ export class ToolHttpRequest implements INodeType {
 				'User-Agent': undefined,
 			},
 			body: {},
+			// We will need a full response object later to extract the headers and check the response's content type.
 			returnFullResponse: true,
 		};