neon: Fix stackoverflows crashing the whole app

packages/neon/lib/src/apps/news/blocs/articles.dart

@@ -59,8 +59,10 @@ class NewsArticlesBloc extends InteractiveBloc implements NewsArticlesBlocEvents
       filterType.add(FilterType.all);
     }
 
+    if (this is! NewsMainArticlesBloc) {
       unawaited(refresh());
     }
+  }
 
   final NewsBloc _newsBloc;
   final NewsAppSpecificOptions options;

packages/neon/lib/src/apps/news/blocs/news.dart

@@ -48,7 +48,7 @@ class NewsBloc extends InteractiveBloc implements NewsBlocEvents, NewsBlocStates
       }
     });
 
-    unawaited(refresh());
+    unawaited(mainArticlesBloc.refresh());
   }
 
   @override
@@ -75,6 +75,7 @@ class NewsBloc extends InteractiveBloc implements NewsBlocEvents, NewsBlocStates
     unawaited(unreadCounter.close());
     unawaited(articles.close());
     unawaited(filterType.close());
+    mainArticlesBloc.dispose();
     super.dispose();
   }