type: fix React.Key type error (#617)

Author: afc163

src/ListContext.ts

@@ -2,7 +2,7 @@ import * as React from 'react';
 import type { InternalNamePath } from './interface';
 
 export interface ListContextProps {
-  getKey: (namePath: InternalNamePath) => [React.Key, InternalNamePath];
+  getKey: (namePath: InternalNamePath) => [InternalNamePath[number], InternalNamePath];
 }
 
 const ListContext = React.createContext<ListContextProps | null>(null);