[BUG] update:checked on a-checkbox is called twice on value change

[CarterLi]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

2.1.0

Environment

3.0.7

Reproduction link

http://example.com

Steps to reproduce

<a-checkbox :checked="false" @update:checked="test">test</a-checkbox>

test(value) {
  console.log(value)
}

What is expected?

test should only be called once with value true

What is actually happening?

test is called twice. Antdv passes an event object at the first time, which is not expected.

Others

https://github.com/vueComponent/ant-design-vue/blob/next/components/vc-checkbox/src/Checkbox.jsx#L92

[zkwolf]

Will be fixed in next release.

[github-actions]

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