hotfix: set default order to -created_at for NEO session/folder list

[yomybaby]

This issue addresses the need to set the default sorting order to -created_at for both compute sessions and VFolder node lists. The goal is to ensure that the newest items are displayed first, providing a more intuitive user experience.

Expected Outcome:

• Default sorting order is set to -created_at.
• Newest items appear first in the lists.