fix: dialog.taro中defaultProps使用ts断言确认类型

Author: Coder-Jack04

src/packages/dialog/dialog.taro.tsx

@@ -44,7 +44,7 @@ const defaultProps = {
   onClose: () => {},
   onConfirm: () => {},
   onOverlayClick: () => true,
-}
+} as TaroDialogProps
 
 export const BaseDialog: FunctionComponent<Partial<TaroDialogProps>> & {
   open: typeof open