Change ObjectBox inserts to use queued instead of async

lib/data/objectbox/objectbox_connections_repo.dart

@@ -95,8 +95,10 @@ class ObjectBoxConnectionsRepo implements IConnectionsRepo {
   bool upsertConnection(Connection connection) {
     memCache.upsertConnection(connection);
     getById(connection.id).match(
-      onSuccess: (existing) => box.put(connection.copy(obId: existing.obId)),
-      onError: (_) => box.put(connection),
+      onSuccess: (existing) => box.putQueued(
+        connection.copy(obId: existing.obId),
+      ),
+      onError: (_) => box.putQueued(connection),
     );
     return true;
   }