To Reproduce Steps to reproduce the behavior:
This problem looks like a regression introduced while fixing https://bugzilla.redhat.com/show_bug.cgi?id=1998184 :

• when instance's snapshot is created in my RHOSP 17.1 deployment (Ceph-backed Glance, Cinder and Nova), resulting image doesn't have "os_hash_algo" and "os_hash_value" properties.
• when I click "Edit image" for such snapshot image, Horizon automatically assumes that "os_hash_algo" and "os_hash_value" are empty and displays them as empty values
• when I click "Update image" (without actually tuning anything), few error messages appear:

Error: Forbidden. Insufficient permissions of the requested operation

Error: Unable to edit the image custom properties.

Expected behavior
Horizon shouldn't try to update undefined image properties