hides fedi timeline for the unauthenticated

src/components/navigation/navigation.js

@@ -24,7 +24,7 @@ export const TIMELINES = {
   },
   twkn: {
     route: 'public-external-timeline',
-    anon: true,
+    anon: false,
     icon: 'globe',
     label: 'nav.twkn',
     criteria: ['!private', 'federating']