feat(core): Add closeFunction support to Sub-Nodes (#7708)

Github issue / Community forum post (link here to close automatically):

---------

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

packages/workflow/src/Workflow.ts

@@ -42,6 +42,7 @@ import type {
 	IRunNodeResponse,
 	NodeParameterValueType,
 	ConnectionTypes,
+	CloseFunction,
 } from './Interfaces';
 import { Node } from './Interfaces';
 import type { IDeferredPromise } from './DeferredPromise';
@@ -1298,6 +1299,7 @@ export class Workflow {
 		}
 
 		if (nodeType.execute) {
+			const closeFunctions: CloseFunction[] = [];
 			const context = nodeExecuteFunctions.getExecuteFunctions(
 				this,
 				runExecutionData,
@@ -1308,12 +1310,31 @@ export class Workflow {
 				additionalData,
 				executionData,
 				mode,
+				closeFunctions,
 				abortSignal,
 			);
 			const data =
 				nodeType instanceof Node
 					? await nodeType.execute(context)
 					: await nodeType.execute.call(context);
+
+			const closeFunctionsResults = await Promise.allSettled(
+				closeFunctions.map(async (fn) => fn()),
+			);
+
+			const closingErrors = closeFunctionsResults
+				.filter((result): result is PromiseRejectedResult => result.status === 'rejected')
+				.map((result) => result.reason);
+
+			if (closingErrors.length > 0) {
+				if (closingErrors[0] instanceof Error) throw closingErrors[0];
+				throw new ApplicationError("Error on execution node's close function(s)", {
+					extra: { nodeName: node.name },
+					tags: { nodeType: node.type },
+					cause: closingErrors,
+				});
+			}
+
 			return { data };
 		} else if (nodeType.poll) {
 			if (mode === 'manual') {