perf(ImageUpload): 根据官方示例设置图片回显格式

[zwtvip]

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[wangjue666]

@zwtvip 这样调整，不是比之前更难用了些吗

before:

 defaultValue: [
    'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
  ],

after:

[
    {
      uid: '-1',
      name: 'image.png',
      status: 'done',
      url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
    },
  ],

[zwtvip]

我尝试了在正式环境使用，上传完会触发watch监听，导致格式不正确而报错，图片无法回显，所以改了官方格式回显，跟外部解耦

[wangjue666]

@zwtvip 那不是应该要在watch里面做手脚吗

我尝试了在正式环境使用，上传完会触发watch监听，导致格式不正确而报错，图片无法回显，所以改了官方格式回显，跟外部解耦

[zwtvip]

已优化