JIRA: https://jira.spring.io/browse/INT-3601
* Move `setChannelResolver(DestinationResolver<MessageChannel> channelResolver)` to the `IntegrationObjectSupport`
* Introduce `IntegrationObjectSupport#getChannelResolver()`
* Change all `IntegrationObjectSupport` inheritors to use `getChannelResolver()` instead of direct `beanFactory` usage
* Fix `ServiceActivatorEndpointTests` do not fall
INT-3601: Addressing PR (JIRA) comments
Fixes failing tests
INT-3601: Address PR comments