fix(core): Use explicit types in configs to ensure valid decorator metadata (#10433)

packages/@n8n/config/src/configs/workflows.config.ts

@@ -4,11 +4,11 @@ import { Config, Env } from '../decorators';
 export class WorkflowsConfig {
 	/** Default name for workflow */
 	@Env('WORKFLOWS_DEFAULT_NAME')
-	defaultName = 'My workflow';
+	defaultName: string = 'My workflow';
 
 	/** Show onboarding flow in new workflow */
 	@Env('N8N_ONBOARDING_FLOW_DISABLED')
-	onboardingFlowDisabled = false;
+	onboardingFlowDisabled: boolean = false;
 
 	/** Default option for which workflows may call the current workflow */
 	@Env('N8N_WORKFLOW_CALLER_POLICY_DEFAULT_OPTION')