el-dialog父子组件传值，关闭el-dialog时报错的解决方法

** 一、当el-dialog作为子组件使用，点击右上角的关闭按钮会出现如下报错 ** 报错：[Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed

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