JIRA: https://jira.spring.io/browse/INT-4501 The call to the `IntegrationFlowBeanPostProcessor#setBeanFactory` happens during BPP creation. The introduced call to `beanFactory#getBean` triggers a lot of bean creations. For those beans not all `BPP`s are applied. * Obtain a `flowContext` bean in lazy-load manner **Cherry-pick to 5.0.x**