Add support for Elastic Search _shard_doc equivalent

[DwaneHall]

Is your feature request related to a problem? Please describe

When paginating search results using the search_after parameter there's no guarantee that results are returned from the same shard in the same order. We notice regular duplicates across pages when results are serviced from a different shard (2 replicas). It's cumbersome to have to make a request to the PIT API to first retrieve a PIT ID to then use it in subsequent queries. It would be nice to be able to specify a default tiebreaker (i.e use primaries for searching) if you know what shards/replicas you'd like to use . Elastic Search appears to solve this issue with the _shard_doc parameter and being able to specify it directly as a sort parameter but it's not supported in OS (https://forum.opensearch.org/t/point-in-time-errors/14068).

https://discuss.elastic.co/t/elastic-no-mapping-found-for-shard-doc-in-order-to-sort-on/268188/2
https://www.elastic.co/guide/en/elasticsearch/reference/current/paginate-search-results.html

Describe the solution you'd like

Support for _shard_doc (or equivalent) sorting instead of having to call the PID api first if you know upfront what shards you'd prefer to use for pagination. Elastic also presents a "preference" search parameter https://www.elastic.co/guide/en/elasticsearch/reference/1.7/search-request-preference.html

Related component

No response

Describe alternatives you've considered

PIT api

Additional context

No response