Names are not retrieved for WebDav servers that use displayName in their response XML

[eblis]

Some WebDAV implementations seem to use displayName in their XML response instead of the more common displayname key.

<d:multistatus xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns" xmlns:x1="http://open-collaboration-services.org/ns">
 <d:response>
  <d:href>/dav.php/@Home/new_library/</d:href>
  <d:propstat>
   <d:prop>
    <d:displayName>new_library</d:displayName>
    <d:getetag>80a1745cfaa43b2057f781413209ff90</d:getetag>
    <d:getlastmodified>Tue, 22 Aug 2023 08:10:49 GMT</d:getlastmodified>
    <d:creationdate>2023-08-22T10:10:49+02:00</d:creationdate>
    <oc:id>02320738</oc:id>
    <d:resourcetype>
     <d:collection/>
    </d:resourcetype>
    <d:iscollection>1</d:iscollection>
    <d:isFolder>t</d:isFolder>
    <oc:permissions>RGDNVCK</oc:permissions>
    <x1:share-permissions>31</x1:share-permissions>
   </d:prop>
   <d:status>HTTP/1.1 200 OK</d:status>
  </d:propstat>
 </d:response>
</d:multistatus>