fix(lakala): 修改回调路由配置

- 将空路径的 POST 路由调整为 'notify' 路径
- 指定控制器方法为 IndexController@notify
- 确保回调接口路径符合业务规范

route/api.php

@@ -15,4 +15,4 @@ use SixShop\System\Middleware\MacroPageMiddleware;
 Route::resource('profit_share_receiver', ProfitShareReceiverController::class)
     ->middleware(['auth', MacroPageMiddleware::class]);
 
-Route::post('', IndexController::class);
+Route::post('notify', [IndexController::class, 'notify']);