TF-1931 Fix user cannot do infinity scroll when he turn off network and reconnect again

(cherry picked from commit e19a644e10671089ac792cb1072cc1856b909940)

lib/features/thread/presentation/model/loading_more_status.dart

@@ -0,0 +1,8 @@
+
+enum LoadingMoreStatus {
+  idle,
+  running,
+  completed;
+
+  bool get isRunning => this == LoadingMoreStatus.running;
+}