fix for sparse vector query boost

Author: Samiul-TheSoccerFan

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/queries/SemanticSparseVectorQueryRewriteInterceptor.java

@@ -101,18 +101,21 @@ protected QueryBuilder buildCombinedInferenceAndNonInferenceQuery(
     private QueryBuilder buildNestedQueryFromSparseVectorQuery(QueryBuilder queryBuilder, String searchInferenceId) {
         assert (queryBuilder instanceof SparseVectorQueryBuilder);
         SparseVectorQueryBuilder sparseVectorQueryBuilder = (SparseVectorQueryBuilder) queryBuilder;
+        SparseVectorQueryBuilder newSparseVectorQueryBuilder = new SparseVectorQueryBuilder(
+            SemanticTextField.getEmbeddingsFieldName(sparseVectorQueryBuilder.getFieldName()),
+            sparseVectorQueryBuilder.getQueryVectors(),
+            (sparseVectorQueryBuilder.getInferenceId() == null && sparseVectorQueryBuilder.getQuery() != null)
+                ? searchInferenceId
+                : sparseVectorQueryBuilder.getInferenceId(),
+            sparseVectorQueryBuilder.getQuery(),
+            sparseVectorQueryBuilder.shouldPruneTokens(),
+            sparseVectorQueryBuilder.getTokenPruningConfig()
+        );
+        newSparseVectorQueryBuilder.boost(sparseVectorQueryBuilder.boost());
+        newSparseVectorQueryBuilder.queryName(sparseVectorQueryBuilder.queryName());
         return QueryBuilders.nestedQuery(
             SemanticTextField.getChunksFieldName(sparseVectorQueryBuilder.getFieldName()),
-            new SparseVectorQueryBuilder(
-                SemanticTextField.getEmbeddingsFieldName(sparseVectorQueryBuilder.getFieldName()),
-                sparseVectorQueryBuilder.getQueryVectors(),
-                (sparseVectorQueryBuilder.getInferenceId() == null && sparseVectorQueryBuilder.getQuery() != null)
-                    ? searchInferenceId
-                    : sparseVectorQueryBuilder.getInferenceId(),
-                sparseVectorQueryBuilder.getQuery(),
-                sparseVectorQueryBuilder.shouldPruneTokens(),
-                sparseVectorQueryBuilder.getTokenPruningConfig()
-            ),
+            newSparseVectorQueryBuilder,
             ScoreMode.Max
         );
     }