feat(core): Update LLM applications building support (no-changelog) (#7710)

extracted out of #7336

---------

Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>
Co-authored-by: Oleg Ivaniv <me@olegivaniv.com>
Co-authored-by: Alex Grozav <alex@grozav.com>

packages/workflow/src/errors/abstract/execution-base.error.ts

@@ -1,4 +1,4 @@
-import type { IDataObject, JsonObject, Severity } from '../../Interfaces';
+import type { Functionality, IDataObject, JsonObject, Severity } from '../../Interfaces';
 import { ApplicationError } from '../application.error';
 
 interface ExecutionBaseErrorOptions {
@@ -21,6 +21,8 @@ export abstract class ExecutionBaseError extends ApplicationError {
 
 	severity: Severity = 'error';
 
+	functionality: Functionality = 'regular';
+
 	constructor(message: string, { cause }: ExecutionBaseErrorOptions) {
 		const options = cause instanceof Error ? { cause } : {};
 		super(message, options);