fix broken links on non-owned channels

webapp/src/app/features/channels/channel-list/channel-list.component.ts

@@ -78,6 +78,10 @@ export class ChannelListComponent implements OnInit {
     return resolved?.displayName || ownerId;
   }
 
+  isOwned(channel: ChannelWithSubscription): boolean {
+    return channel.owner_user_id === this.authService.getUserId();
+  }
+
   viewChannel(channel: ChannelWithSubscription): void {
     this.router.navigate(['/channels', channel.channel_id]);
   }