Neighboring File Access cancel
See "Neighboring File Access"
https://gitlab.gnome.org/Teams/Design/app-mockups/-/raw/master/files/file-chooser.png
It should have a "Cancel" option so that user can move files around before allowing access to neighboring files.
Not sure if Nautilus will allow it in "File Picker" mode but it's perfect in combination of using it as portal since the user will be able to re-organize files directly in the file picker.
Edited by Sonny Piers