fix(components): Modal props 类型错误

src/components/Modal/src/props.ts

@@ -42,7 +42,7 @@ export const basicProps = Object.assign({}, modalProps, {
 
   wrapperProps: Object as PropType<Partial<ModalWrapperProps>>,
 
-  afterClose: Function as PropType<() => Promise<VueNode>>,
+  afterClose: Function,
 
   bodyStyle: Object as PropType<CSSProperties>,