Allow direct opening of files when browsing from folder linked in Collectives

Is your feature request related to a problem? Please describe.
When users paste a internal link to a folder in a collective, the folder is added, good.
When viewing the collective, the folder opens in the popup in two clicks (one on the link opening the link, another one on the folder opens the content in the center popup).

Afterwards if we navigate in the folder, we can open subfolders(1) with a single click, but cannot open files(2) (3) with the same single click, user have to click on "open in files" (4) it seems a bit counter-intuitive.

Describe the solution you'd like
Be able to open files directly with a single click in the files popup just like in the files app.

Describe alternatives you've considered
Drop the "open in files" completely as we cannot use it for folders (opening in a single click), and it can be quite unintuitive for files.

Thanks a lot for the collectives app 👍

Start by reproducing navigation in the Collectives files popup, comparing the single-click behavior for subfolders with the current behavior for files. Done means files open directly with one click, while folder navigation continues to work and the existing "open in files" behavior is handled as intended.