Fix failing tests

Author: ben-milanko

flutter_cache_manager/lib/src/config/_config_web.dart

@@ -1,7 +1,8 @@
 import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'package:flutter_cache_manager/src/config/config.dart' as def;
-
-import '../storage/file_system/file_system.dart';
+import 'package:flutter_cache_manager/src/storage/cache_info_repositories/indexed_db_cache_info_repository.dart';
+import 'package:flutter_cache_manager/src/storage/file_system/file_system.dart';
+import 'package:flutter_cache_manager/src/storage/file_system/indexed_db_file_system.dart';
 
 class Config implements def.Config {
   Config(

flutter_cache_manager/lib/src/storage/cache_info_repositories/cache_info_repositories.dart

@@ -1,5 +1,8 @@
 export 'cache_info_repository.dart';
 export 'cache_object_provider.dart';
-export 'indexed_db_cache_info_repository.dart';
 export 'json_cache_info_repository.dart';
 export 'non_storing_object_provider.dart';
+
+// Note: indexed_db_cache_info_repository.dart is web-only and not exported here
+// to avoid dart:js_interop import errors on non-web platforms.
+// Web code should import it directly when needed.

flutter_cache_manager/lib/src/storage/file_system/file_system.dart

@@ -1,10 +1,7 @@
 import 'package:file/file.dart';
 
-export 'file_system.dart';
-export 'file_system_io.dart';
-export 'file_system_web.dart';
-export 'indexed_db_file.dart';
-export 'indexed_db_file_system.dart';
+export 'file_system_io.dart'
+    if (dart.library.js_interop) 'file_system_web.dart';
 
 abstract class FileSystem {
   Future<File> createFile(String name);

flutter_cache_manager/lib/src/storage/file_system/file_system_web.dart

@@ -2,6 +2,10 @@ import 'package:file/file.dart' show File;
 import 'package:file/memory.dart';
 import 'package:flutter_cache_manager/src/storage/file_system/file_system.dart';
 
+// Export web-specific implementations
+export 'indexed_db_file.dart';
+export 'indexed_db_file_system.dart';
+
 class MemoryCacheSystem implements FileSystem {
   final directory = MemoryFileSystem().systemTempDirectory.createTemp('cache');