List component is changing the Item key after refresh.

[douglasjunior]

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

Version

3.9.2

Environment

MacOSX 10.13.6, Opera 55.0.2994.61, React 16.3.2

Reproduction link

https://github.com/ant-design/ant-design/blob/master/components/list/index.tsx

Steps to reproduce

Simple use the List component with several itens.

What is expected?

I expect the Items keys to be the one returned by the rowKey function.

What is actually happening?

The List component use the React.Children.map to clone the Itens. But the React.Children.map adds a prefix to the keys of the each Item, causing a forced refresh.

---

The bug is in this line

ant-design/components/list/index.tsx

Lines 240 to 244 in 0219aa2

	const childrenList = React.Children.map(items, (child: any, index) =>
	React.cloneElement(child, {
	key: this.keys[index],
	}),
	);

Example:

[douglasjunior]

If possible, I can fix it.