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Prior to the changes that fixed #12451, `FilteredPropertySources` and `CompositePropertySources` were required by the `PropertySourcesDeducer` to ensure that configuration properties binding could see changes to the environment even when there was a PropertySourcesPlaceholderConfigurer in the context. #12451 changed the way property sources are adapted by `SpringConfigurationPropertySources`, removing the need for `FilteredPropertySources` and `CompositePropertySources`. Fixes gh-13738