feat(core): Add workflow name label to workflow metrics (#16837)

Co-authored-by: Marc Littlemore <marc@n8n.io>

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

@@ -61,6 +61,10 @@ class PrometheusMetricsConfig {
 	/** How often (in seconds) to update active workflow metric */
 	@Env('N8N_METRICS_ACTIVE_WORKFLOW_METRIC_INTERVAL')
 	activeWorkflowCountInterval: number = 60;
+
+	/** Whether to include a label for workflow name on workflow metrics. */
+	@Env('N8N_METRICS_INCLUDE_WORKFLOW_NAME_LABEL')
+	includeWorkflowNameLabel: boolean = false;
 }
 
 @Config

packages/@n8n/config/test/config.test.ts

@@ -176,6 +176,7 @@ describe('GlobalConfig', () => {
 				enable: false,
 				prefix: 'n8n_',
 				includeWorkflowIdLabel: false,
+				includeWorkflowNameLabel: false,
 				includeDefaultMetrics: true,
 				includeMessageEventBusMetrics: false,
 				includeNodeTypeLabel: false,