Fix memory collection not being set as loaded

LeStorage/StoredCollection.swift

@@ -197,6 +197,7 @@ public class StoredCollection<T: Storable>: RandomAccessCollection, SomeCollecti
         } catch {
             Logger.error(error)
         }
+        self._setAsLoaded()
     }
     
     /// Loads the collection using the server data only if the collection file doesn't exists