@EnableReactiveMethodSecurity does not support ResponseEntity<Publisher<T>> as return type

According to the Webflux documentation it is allowed to use the return type ResponseEntity<Mono<T>>

Neither
AuthorizationManagerBeforeReactiveMethodInterceptor nor AuthorizationManagerAfterReactiveMethodInterceptor support this.

Using a method signature with the described return type causes an java.lang.IllegalStateException like

java.lang.IllegalStateException: The returnType class org.springframework.http.ResponseEntity on public org.springframework.http.ResponseEntity example.ExampleController.getSomething() must return an instance of org.reactivestreams.Publisher (for example, a Mono or Flux) in order to support Reactor Context
	at org.springframework.util.Assert.state(Assert.java:97)

Maybe a little bit of context:
We're using a code generator which produces such method signatures causing the exception whenever the return type is a list of something.
fun getSomething(): ResponseEntity<Flow<SomeDTO>>
We also found a workaround by adjusting the generator-based template but this is rather really just a workaround hence this ticket.

To Reproduce
Use simple project with spring-security 6.x and have @EnableReactiveMethodSecurity configured.
Add @PreAuthorize to a controller method with the return type ResponseEntity<Mono<T>> with T being some arbitrary DTO class.
Run the server, call the endpoint and you should see the mentioned exception.

Expected behavior
@EnableReactiveMethodSecurity should allow all valid return types defined for Webflux

Sample
Don't have one yet.

Start with AuthorizationManagerBeforeReactiveMethodInterceptor.java and AuthorizationManagerAfterReactiveMethodInterceptor.java at the referenced lines, then reproduce the failure using @EnableReactiveMethodSecurity, @PreAuthorize, and a ResponseEntity<Mono> controller method. Done means valid WebFlux response types no longer cause the reported IllegalStateException when the endpoint is called.