HSEARCH-5082 WIP-clarify: Upgrade to Hibernate ORM 7.0

mapper/orm-outbox-polling/src/main/java/org/hibernate/search/mapper/orm/outboxpolling/mapping/impl/AdditionalMappingBuilder.java

@@ -56,7 +56,7 @@ public AdditionalMappingBuilder index(String name, String columns) {
 		index.setColumnList( columns );
 
 		entity.getTable()
-				.getIndex()
+				.getIndexes()
 				.add( index );
 		return this;
 	}

mapper/orm/src/main/java/org/hibernate/search/mapper/orm/search/query/impl/HibernateOrmSearchQueryAdapter.java

@@ -140,6 +140,9 @@ public HibernateOrmSearchQueryAdapter<R> setTimeout(int timeout) {
 
 	@Override
 	public HibernateOrmSearchQueryAdapter<R> setTimeout(Integer timeout) {
+		// TODO: this method comes from JPA and there timeout is in ms ?
+		//  https://jakarta.ee/specifications/persistence/3.2/jakarta-persistence-spec-3.2-m2 ctrl+f "Set the query timeout, in milliseconds"
+		// 	but the one above is in sec from ORM itself (CommonQueryContract)
 		delegate.failAfter( timeout == null ? null : timeout.longValue(), TimeUnit.SECONDS );
 		return this;
 	}