Fix type of returned sort values.

Original Pull Request #2786
Closes #2777

(cherry picked from commit 3833975)
(cherry picked from commit 0fb98ed)

Author: sothawo

src/main/java/org/springframework/data/elasticsearch/client/elc/DocumentAdapters.java

@@ -138,7 +138,7 @@ public static SearchDocument from(Hit<?> hit, JsonpMapper jsonpMapper) {
 		document.setPrimaryTerm(hit.primaryTerm() != null && hit.primaryTerm() > 0 ? hit.primaryTerm() : 0);
 
 		float score = hit.score() != null ? hit.score().floatValue() : Float.NaN;
-		return new SearchDocumentAdapter(document, score, hit.sort().stream().map(TypeUtils::toString).toArray(),
+		return new SearchDocumentAdapter(document, score, hit.sort().stream().map(TypeUtils::toObject).toArray(),
 				documentFields, highlightFields, innerHits, nestedMetaData, explanation, matchedQueries, hit.routing());
 	}