Deleting a field, deletes all CE-displays using it

Problem

When a field is deleted, all our entity-ce-display configs that depend on it, are deleted as well.

Proposed resolution

Handle the same way it is handled for core entity displays, the display configuration of entity view display of core gets automatically updated to remove the field, but the rest of the display stays as i

Steps to reproduce

s.

Remaining tasks

add test coverage