Change IndexOrderSortContributor to use _doc instead of _uid

Description

_uid is deprecated and should be retired in favor of _doc.

[INFO] Running org.hibernate.search.integrationtest.backend.tck.search.sort.SearchSortIT
11:32:51,348 (elasticsearch[EgTo-bL][search][T#13]) WARN UidFieldMapper:321 - Fielddata access on the _uid field is deprecated, use _id instead

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Assignee

Guillaume Smet

Reporter

Guillaume Smet

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Minor
Configure