Bean::SESSION Scope for definition is not undefined

Q	A
Bug report?	yes
Feature request?	no
Swoft version	2.0.11
Swoole version	4.8.6
PHP version	7.4
Runtime environment	Mac

Describe the bug

in bean.php

    'myBean' => [
        'class' => MyBean::class,
        '__option' => [
            'scope' => Bean::SESSION,
        ],
    ],

InvalidArgumentException(code:0) Scope for definition is not undefined

看起来像这里缺少了 Bean::SESSION

同时想问 Bean::SESSION 与 Bean::REQUEST 有什么区别