add feature flag

Author: PhilBastian

src/Frontend/env.d.ts

@@ -10,6 +10,7 @@ declare global {
       service_control_url: string;
       monitoring_urls: string[];
       showPendingRetry: boolean;
+      showAllMessages: boolean;
     };
   }
 }

src/Frontend/src/components/PageHeader.vue

@@ -20,7 +20,7 @@ const menuItems = computed(
   DashboardMenuItem,
   HeartbeatsMenuItem,
   ...(useIsMonitoringEnabled() ? [MonitoringMenuItem] : []),
-  AuditMenuItem,
+  ...(window.defaultConfig.showAllMessages ? [AuditMenuItem] : []),
   FailedMessagesMenuItem,
   CustomChecksMenuItem,
   EventsMenuItem,