Admin Detail Page Does Not Redirect After Save

[MohmdFo]

When attempting to save changes or create a new Mailbox instance in the Django admin interface, the user is not redirected back to the list view. Instead, the user remains on the detail page of the Mailbox instance, which is not the expected behavior.

Steps to Reproduce:

1. Navigate to the Django admin panel.
2. Go to the Mailbox model.
3. Click on an existing Mailbox instance or create a new one.
4. Make changes to the instance or fill out the form for a new instance.
5. Click the "Save" button.

Expected Behavior:

After clicking "Save," the user should be redirected to the Mailbox list view, where they can see the updated or newly created instance.

Actual Behavior:

After clicking "Save," the user remains on the detail page of the Mailbox instance, and the page does not redirect to the list view.