Backport/backport 13721 to 2.x (#14151)

* Fix the breaking change check due to Derived fields changes in 2.15

Signed-off-by: Rishabh Maurya <rishabhmaurya05@gmail.com>

* [Derived Field] Integration tests for derived fields (#13721)

* Integration test for derived fields

* tests derived fields when defined in index mappings
* tests derived fields when defined in query
* tests mappings and settings updates for derived fields
* tests index and search analyzer applicability on derived fields
* tests query string

Signed-off-by: Rishabh Maurya <rishabhmaurya05@gmail.com>

* rename source_indexed_field to prefilter_field

Signed-off-by: Rishabh Maurya <rishabhmaurya05@gmail.com>

* Add entry to CHANGELOG

Signed-off-by: Rishabh Maurya <rishabhmaurya05@gmail.com>

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Signed-off-by: Rishabh Maurya <rishabhmaurya05@gmail.com>
(cherry picked from commit c49eca4)

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Signed-off-by: Rishabh Maurya <rishabhmaurya05@gmail.com>

CHANGELOG.md

@@ -23,6 +23,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add remote routing table for remote state publication with experimental feature flag ([#13304](https://github.com/opensearch-project/OpenSearch/pull/13304))
 - Add support for query level resource usage tracking ([#13172](https://github.com/opensearch-project/OpenSearch/pull/13172))
 - [Query Insights] Add cpu and memory metrics to top n queries ([#13739](https://github.com/opensearch-project/OpenSearch/pull/13739))
+- Derived field object type support ([#13720](https://github.com/opensearch-project/OpenSearch/pull/13720))
 
 ### Dependencies
 - Bump `com.github.spullara.mustache.java:compiler` from 0.9.10 to 0.9.13 ([#13329](https://github.com/opensearch-project/OpenSearch/pull/13329), [#13559](https://github.com/opensearch-project/OpenSearch/pull/13559))