Support BulkEdit of attribute for an entity that has not been saved in the DB

[mig-sam]

Jmix: 2.7.1

Right now user can create child attribute (composition type) and Edit it on the same view without click Save. But BulkEdit of this attribute failed with error: EntityAccessException: Unable to load entity OrderLine-019a5e4a-06ca-76bc-a5d1-29ed284d79c4 because it has been deleted or access denied It will be convinient that Edit and BulkEdit works the same way or atleast user sees wairning message instead of exeption.

https://github.com/user-attachments/assets/611edf99-8cf0-43b5-b0e7-f59aa8df9c26