Flex 布局中 align-item 设置时 child 设置 margin auto 未居中

[temper357]

使用的 Kraken 版本 ｜ What version of kraken are you using

main

重现步骤 ｜ Steps To Reproduce

重现代码 | Code example:

  it('should work flex item of margin auto when align items is set', async () => {
    let div;
    div = createElement(
      'div',
      {
        style: {
          display: 'flex',
          flexDirection: 'column',
          alignItems: 'center',
          width: '300px',
          height: '300px',
          backgroundColor: 'green'
        },
      },
      [
        createElement('div', {
          style: {
            width: '100px',
            height: '100px',
            marginLeft: 'auto',
            marginRight: 'auto',
            backgroundColor: 'yellow',
          }
        })
      ]
    );

    BODY.appendChild(div);

    await snapshot();
  });

预期结果 ｜ Expected results:

实际结果 ｜ Actual results: