完善合作伙伴模块移除：清理控制器中的 partner 字段

- 从后台 ThemeController 的 save 方法中移除 partner 字段
- 从前台 ThemeController 的 config 方法中移除 partner 字段
- 确保数据保存和读取接口不再处理 partner 相关数据

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

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

plugins/addon/theme_configurator/controller/ThemeController.php

@@ -55,7 +55,6 @@ class ThemeController extends PluginAdminBaseController
             'side'          => $param['side'] ?? [],
             'feedback_type' => $param['feedback_type'] ?? [],
             'honor'         => $param['honor'] ?? [],
-            'partner'       => $param['partner'] ?? [],
         ];
 
         $model  = new ThemeConfigModel();