iframe element 未设置 default width/height

[temper357]

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

main

重现步骤 ｜ Steps To Reproduce

iframe element default width 为 300px，height 为 150px。

重现代码 | Code example:

// @TODO: iframe element not config default width/height.
  xit('height-004', async () => {
    let p;
    let div;
    p = createElement(
      'p',
      {
        xmlns: 'http://www.w3.org/1999/xhtml',
        style: {
          'box-sizing': 'border-box',
        },
      },
      [
        createText(`Test passes if there is `),
        createElement(
          'strong',
          {
            style: {
              'box-sizing': 'border-box',
            },
          },
          [createText(`no red`)]
        ),
        createText(`.`),
      ]
    );
    div = createElement(
      'div',
      {
        xmlns: 'http://www.w3.org/1999/xhtml',
        style: {
          position: 'relative',
          'box-sizing': 'border-box',
        },
      },
      [
        createElement('iframe', {
          style: {
            border: '1px solid red',
            height: 'auto',
            position: 'absolute',
            width: 'auto',
            'box-sizing': 'border-box',
          },
        }),
        createElement('div', {
          style: {
            position: 'absolute',
            border: '1px solid green',
            height: '150px',
            top: '0',
            width: '300px',
            'box-sizing': 'border-box',
          },
        }),
      ]
    );
    BODY.appendChild(div);

    await snapshot();
  });

预期结果 ｜ Expected results:

实际结果 ｜ Actual results: