This reverts commit 3b4ff7d7.
The commit caused the build to fail because it disabled
`@ConfigurationPropertiesScan` completely in slice tests. It
did not take into account components that were explicitly included
in slice tests using the `components` attribute. Since `@ConfigurationPropertiesScan`
replaces `@Component` and `@EnableConfigurationProperties`, these components
are no longer registered even though explicitly included.