refactor: удалить неиспользуемый импорт и обновить метод заполнения примеров транзакций

lib/data/database/hive_service.dart

@@ -1,7 +1,6 @@
 import 'package:hive_ce_flutter/hive_flutter.dart';
 import 'package:logger/logger.dart';
 import '/models/category.dart';
-import '/models/icon_data_adapter.dart';
 import '/models/tag.dart';
 import '/models/transaction_record.dart';
 import '/models/user.dart';
@@ -99,7 +98,7 @@ class HiveService {
     final transactionBox = transactions;
     if (transactionBox.isEmpty) {
       _logger.i('Filling sample transactions');
-      await transactionBox.addAll(TransactionUtils.getSampleTransactions());
+      await transactionBox.addAll(TransactionUtils.getSampleTransactions(_defaultUserId));
       await transactionBox.flush();
     }
   }