TYPO3 Core

The click menu in the file list module produces the error that top.nav is undefined or has no method refresh (depending on whether or not the page tree is loaded already). The problem is that in the old days top.nav contained a reference to the current navigation script (page tree, folder tree, whatever) now it contains only a reference to the page tree. The click menu is trying to update the folder tree and fails.

Solution:
Let top.nav again contain a reference to the current navigation component.

How to test:
Use the click menu in the file list module to edit a file and notice that the folder list is indeed updated.

(issue imported from #M17208)