fix: closable !== null

Author: 刘欢

src/DialogWrap.tsx

@@ -51,7 +51,7 @@ const DialogWrap: React.FC<IDialogPropTypes> = (props) => {
           destroyOnHidden={destroyOnHidden}
           afterClose={() => {
             const { afterClose: closableAfterClose = undefined } =
-              typeof closable === 'object' ? closable : {};
+              typeof closable === 'object' && closable !== null ? closable : {};
             closableAfterClose?.();
             afterClose?.();
             setAnimatedVisible(false);