feat(core): Improve Langsmith traces for AI executions (#9081)

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>

packages/cli/src/WorkflowExecuteAdditionalData.ts

@@ -24,6 +24,7 @@ import type {
 	ExecutionStatus,
 	ExecutionError,
 	EventNamesAiNodesType,
+	CallbackManager,
 } from 'n8n-workflow';
 import {
 	ApplicationError,
@@ -754,6 +755,7 @@ async function executeWorkflow(
 		loadedWorkflowData?: IWorkflowBase;
 		loadedRunData?: IWorkflowExecutionDataProcess;
 		parentWorkflowSettings?: IWorkflowSettings;
+		parentCallbackManager?: CallbackManager;
 	},
 ): Promise<Array<INodeExecutionData[] | null> | IWorkflowExecuteProcess> {
 	const internalHooks = Container.get(InternalHooks);
@@ -815,6 +817,7 @@ async function executeWorkflow(
 			workflowData,
 		);
 		additionalDataIntegrated.executionId = executionId;
+		additionalDataIntegrated.parentCallbackManager = options.parentCallbackManager;
 
 		// Make sure we pass on the original executeWorkflow function we received
 		// This one already contains changes to talk to parent process