feat: Add new event hooks (#5530)

* feat: Add new event hooks

* fix: update event

packages/editor-ui/src/stores/posthog.ts

@@ -6,6 +6,8 @@ import { useSettingsStore } from './settings';
 import { FeatureFlags } from 'n8n-workflow';
 import { EXPERIMENTS_TO_TRACK } from '@/constants';
 import { useTelemetryStore } from './telemetry';
+import { runExternalHook } from '@/mixins/externalHooks';
+import { useWebhooksStore } from './webhooks';
 
 export const usePostHogStore = defineStore('posthog', () => {
 	const usersStore = useUsersStore();
@@ -104,6 +106,10 @@ export const usePostHogStore = defineStore('posthog', () => {
 		});
 
 		trackedDemoExp.value[name] = variant;
+		runExternalHook('posthog.featureFlagsUpdated', useWebhooksStore(), {
+			name,
+			variant,
+		});
 	};
 
 	watch(