Warn error toast with "0" count appears during create/edit MARC holdings record

Overview: Warn error toast with "0" count appears during create/edit MARC holdings record.

Steps to reproduce:

1. Log in into Snapshot environment as admin user

2. Go to “Inventory” app

3. Find an instance with “MARC holdings” record

4. Click on the “View holdings” button on instance detail view

5. Click on the “Actions” >> “Edit in quickmarc”

6. Update any field of “MARC holdings” record.

7. Click on the “Save & close” button

Expected result: Only Success/Error (in case of validation error) toast notification is shown. We shouldn’t show Warn toast notification for MARC holdings record.
Actual result: Success/Error + Warn toast notifications are shown.