RestTemplateHateoasConfiguration previously referred to HypermediaWebMvcConfigurer which is turn depending on WebMvcConfigurer, a type living in spring-webmvc. The very former would still get active in WebFlux as the web stack is selected based on the presence of either DispatcherServlet or DispatcherHandler. This is now resolved by using a WebMvcConverter indrection to handle the configuration tweaks avoiding the reference to interfaces from spring-webmvc.
Introduced an ArchUnit based test that Spring HATEOAS code only depends on Spring types containing references to reactive types from either the ….reactive package or classes starting with WebFlux.
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