add back changelog since QueryBuilderProtoConertRegistryImpl triggers a merge conflict anyway

Author: karenyrx

CHANGELOG.md

@@ -32,6 +32,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Implement GRPC MatchPhrase, MultiMatch queries ([#19449](https://github.com/opensearch-project/OpenSearch/pull/19449))
 - Optimize gRPC transport thread management for improved throughput ([#19278](https://github.com/opensearch-project/OpenSearch/pull/19278))
 - Implement GRPC Boolean query and inject registry for all internal query converters ([#19391](https://github.com/opensearch-project/OpenSearch/pull/19391))
+- Implement GRPC Script query ([#19455](https://github.com/opensearch-project/OpenSearch/pull/19455))
 
 ### Changed
 - Refactor `if-else` chains to use `Java 17 pattern matching switch expressions`(([#18965](https://github.com/opensearch-project/OpenSearch/pull/18965))