DDC-3783: [GH-1433] Check for non-cacheable entities on metadata level, not at runtime

[doctrinebot]

Jira issue originally created by user @doctrinebot:

This issue is created automatically through a Github pull request on behalf of goetas:

Url: #1433

Message:

This PR moves the check for non-cacheable entities from "runtime" to metadata definition.

If an entity has an association key as part of its PK, and this association key is not configured to be stored into SLC, an exception it thrown.

The previous approach was checking this constraint at "runtime" (right before saving the value), this PR moves this check at metadata level into (_validateAndCompleteAssociationMapping method).

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1433] was labeled:
#1433

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1433] was assigned:
#1433

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1433] was merged:
#1433

[doctrinebot]

Issue was closed with resolution "Fixed"