fix(config): release 构建自动使用生产环境

test/core/app_config_environment_test.dart

@@ -0,0 +1,18 @@
+// Author: fruit.com.cn
+
+// 应用环境选择测试。
+import 'package:flutter/foundation.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/config/app_config.dart';
+import 'package:fruitshorts/core/config/dev_config.dart';
+import 'package:fruitshorts/core/config/prod_config.dart';
+
+void main() {
+  test('should_use_environment_matching_build_mode', () {
+    expect(AppConfig.useDevConfig, !kReleaseMode);
+    expect(
+      AppConfig.baseUrl,
+      kReleaseMode ? ProdConfig.baseUrl : DevConfig.baseUrl,
+    );
+  });
+}