Control information for non-transient entities after `$apply`

[HeikoTheissen]

The result of a data aggregation request with $apply may contain entities with their full key, like in OData-DataAgg, example 103.

Can such entities also contain control information like their @id or @etag?

[mikepizzo]

2025-5-21: We agree that any resource in an aggregation response that represents a single persisted entity should be able to include the control information for that entity.