如何避免在jpa中从多对多删除实体

@Entity
public class EntityA {
    @Id
    private Long id;

    @ManyToMany(cascade = CascadeType.REMOVE)
    @JoinTable(name = "a_b",
            joinColumns = @JoinColumn(name = "a_id"),
            inverseJoinColumns = @JoinColumn(name = "b_id"))
    private List<EntityB> entitiesB;
    
    // getters and setters
}

@Entity
public class EntityB {
    @Id
    private Long id;

    @ManyToMany(mappedBy = "entitiesB")
    private List<EntityA> entitiesA;
    
    // getters and setters
}

// 删除实体A的示例代码
EntityManager em = ...; // 获取EntityManager
EntityA entityA = em.find(EntityA.class, entityId);
entityA.getEntitiesB().clear(); // 删除关联关系
em.remove(entityA); // 删除实体A