Bugfix: Show no auth popup on password protected public links in ownCloud 10

We fixed a native browser auth popup erroneously being shown for password protected public links with ownCloud 10.

https://github.com/owncloud/web/pull/6530
https://github.com/owncloud/owncloud-sdk/pull/1020
https://github.com/owncloud/web/issues/5727
