Revise native Hibernate 5 bootstrapping with JTA transaction manager

Closes gh-25858

spring-orm/src/main/java/org/springframework/orm/hibernate5/LocalSessionFactoryBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -225,6 +225,8 @@ public class LocalSessionFactoryBuilder extends Configuration {
 					"Unknown transaction manager type: " + jtaTransactionManager.getClass().getName());
 		}
 
+		getProperties().put(AvailableSettings.TRANSACTION_COORDINATOR_STRATEGY, "jta");
+
 		// Hibernate 5.1/5.2: manually enforce connection release mode AFTER_STATEMENT (the JTA default)
 		try {
 			// Try Hibernate 5.2