Fix double-sorting usung limit of FetchableFluentQueryBySpecification.

Closes #3600
Original pull request: #3601

Author: JingBh

spring-data-jpa/src/main/java/org/springframework/data/jpa/repository/support/FetchableFluentQueryBySpecification.java

@@ -98,7 +98,7 @@ public FetchableFluentQuery<R> limit(int limit) {
 
 		Assert.isTrue(limit >= 0, "Limit must not be negative");
 
-		return new FetchableFluentQueryBySpecification<>(spec, entityType, resultType, this.sort.and(sort), limit,
+		return new FetchableFluentQueryBySpecification<>(spec, entityType, resultType, sort, limit,
 				properties, finder, scroll, countOperation, existsOperation, entityManager, projectionFactory);
 	}