Deprecate `applyBeanPostProcessorsBeforeInitialization` and `applyBeanPostProcessorsAfterInitialization` in the `AutowireCapableBeanFactory` interface

[jhoeller]

Following up on #30345, the applyBeanPostProcessorsBeforeInitialization and applyBeanPostProcessorsAfterInitialization methods are candidates for deprecation in their public form on AutowireCapableBeanFactory since they are not externally invoked within the Spring Framework project anymore.