Closing editors on password protected links with auth context

[JammingBen]

Describe the bug

Closing file editors on password protected links with auth context (though without having actual access to the resource) renders an empty file list.

Steps to reproduce

1. As "admin", create a folder and upload a PDF file into the folder
2. Create a password protected public link for that folder
3. As "einstein", open that link and enter the password
4. Open the PDF file
5. Close it again

Expected behavior

The file list containing the PDF file is being displayed after the file has been closed.

Actual behavior

The file list is empty after the file has been closed.

Issue exists on current master, needs checking if stable-8.0 is affected as well.

[AlexAndBear]

Little technical design. It looks like the currentFolder is not set, after closing the viewer/editor