The entity name validator is not called for <ac:link> based links

1. On the confluence instance create a page with "/" in the name and a page that links to it.
2. Export the two pages as xml (you can use the Confluence-export-space-test (10).zipdemo zip)
3. Import the pages into xwiki

Expected result: The links are transformed according to XWiki's naming strategies

Actual result: the page containing "/" in the name is renamed according to XWiki's naming strategies, but the links pointing to it are not updated properly: