* [misc] Fix unit tests for aiModel::getDefaultLanguageModel() method

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

module/ai/test/lib/ai.unittest.class.php

@@ -181,7 +181,7 @@ class aiTest
      * @access public
      * @return mixed
      */
-    public function getDefaultLanguageModelTest()
+    public function getDefaultLanguageModelTest($mockData = null)
     {
         // 使用反射来测试私有方法
         $method = new ReflectionMethod($this->objectModel, 'getDefaultLanguageModel');