Fix (or hide) upload new files for guest user

[kesselb]

Steps to reproduce

1. Be a guest user
2. Join a public talk room
3. Try to upload new files

Expected behaviour

I can use "upload new files" to upload a new file

Actual behaviour

PROPFIND https://cloud.nextcloud.com/remote.php/dav/files/guest%40test.com/Talk/meme_to_share_with_you.gif

<?xml version="1.0" encoding="utf-8"?>
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
  <s:exception>Sabre\DAV\Exception\NotFound</s:exception>
  <s:message>File with name //Talk could not be located</s:message>
</d:error>

Browser

Microphone available: yes

Camera available: no

Talk app & Server configuration

cloud.nextcloud.com

[nickvergessen]

This is about guests from the guest app not "not-logged in users"

[nickvergessen]

Also happens for users without a quota I guess

[nickvergessen]

Fixed