* Fix BeanFactory propagation for MMInvokerHelper
* Remove check for `null` in the
`MessagingMethodInvokerHelper.isProvidedMessageHandlerFactoryBean()`
* Fix `RecipientListRouter` for `BeanFactory` propagation to the
`Recipient.selector`
* Fix tests for `BeanFactory` population and propagation
* Add `errorChannel` into the `TestUtils.createTestApplicationContext()`
* Fix some Sonar smell, including new reported
* * Restore NPE check for the `BeanFactory` in the
`MessagingMethodInvokerHelper` to avoid breaking changes in the current
point release
* Some other polishing and optimizations in the
`MessagingMethodInvokerHelper`
eed16f02ca