SpringBoot Make ReactiveUserDetailsServiceAutoConfiguration conditional on reactive web app

The UserDetailsServiceAutoConfiguration is only to be active in a reactive web application

I tried to align my tests to this commit https://github.com/spring-projects/spring-boot/commit/ff9fde0ef4a116bf13f0c5860414b0b2798fbdda But I am not sure, if that is now entirely correct. If you have remarks, please hit me up :)

See gh-43345

Comment From: BenchmarkingBuffalo

The problem I am facing in this PR is that an RSocket-Application is not automatically recognized as a reactive webapplication. This leads me to the question whether it should be adjusted, hence an RSocket-Application is always a reactive webapplication or if the Condition for ReactiveUserDetailsServiceAutoConfiguration needs to be adjusted to work on webapps and non webapps. What do you think @mhalbritter @philwebb ?

Comment From: mhalbritter

Hmm yeah, I think we can't do that then. I overlooked the fact that RSocket is also supported by Spring Security. @bclozel WDYT?