Test and fix for maxindex() / maxelement() issues in select clause

[beikov]

No description provided.

[hibernate-github-bot]

Thanks for your pull request!

This pull request does not follow the contribution rules. Could you have a look?

❌ All commit messages should start with a JIRA issue key matching pattern HHH-\d+
    ↳ Offending commits: [ae021cf, 64fb349]

› This message was automatically generated.

[gavinking]

@beikov this did not fix the problem. There is still an unnecessary join.

For example:

select maxindex(eol.listOfBasics) from EntityOfLists eol

results in:

select
        (select
            max(l2_0.listOfBasics_ORDER) 
        from
            EntityOfLists_basic l2_0 
        where
            e1_0.id=l2_0.EntityOfLists_id) 
    from
        EntityOfLists e1_0 
    join
        EntityOfLists_basic l1_0 
            on e1_0.id=l1_0.EntityOfLists_id

[beikov]

Thanks for the notice. I'll look into that.

[beikov]

See #4798 for the fix