Flush operation after a cascade delete could prejudice commit

With Infinispan remote dialect, a large cascade delete on a bidirectional association and a subsequent flush could bring persistence context in an inconsistent state, causing in turn this error on commit operation:

`javax.persistence.RollbackException: Error while committing the transaction
at org.hibernate.ogm.backendtck.inheritance.singletable.family.SingleTableInheritancePersistTest.testFlushAndCommitAfterCascadeDelete(SingleTableInheritancePersistTest.java:192)
Caused by: java.lang.IllegalStateException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : org.hibernate.ogm.backendtck.inheritance.singletable.family.Woman.familyName -> org.hibernate.ogm.backendtck.inheritance.singletable.family.Family
at org.hibernate.ogm.backendtck.inheritance.singletable.family.SingleTableInheritancePersistTest.testFlushAndCommitAfterCascadeDelete(SingleTableInheritancePersistTest.java:192)
Caused by: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : org.hibernate.ogm.backendtck.inheritance.singletable.family.Woman.familyName -> org.hibernate.ogm.backendtck.inheritance.singletable.family.Family
`
Test case is here: