Failed: ClientServerHttp2EnabledSpec - useful error message when connecting to a HTTP endpoint over HTTPS

[johanandren]

https://github.com/akka/akka-http/actions/runs/4856926557/jobs/8656939183#step:7:1196

[info] - should produce a useful error message when connecting to a HTTP endpoint over HTTPS *** FAILED *** (6 seconds, 242 milliseconds)
[info]   java.lang.AssertionError: timeout (6 seconds) waiting for 1 messages on WarningFilter(None,Right(Perhaps this was an HTTPS request sent to an HTTP endpoint),false)
[info]   at akka.testkit.EventFilter.intercept(TestEventListener.scala:122)
[info]   at akka.http.scaladsl.ClientServerSpecBase.$anonfun$new$99(ClientServerSpec.scala:958)
[info]   at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[info]   at akka.stream.testkit.scaladsl.StreamTestKit$.assertAllStagesStopped(StreamTestKit.scala:32)
[info]   at akka.stream.testkit.Utils$.assertAllStagesStopped(Utils.scala:21)
[info]   at akka.http.scaladsl.ClientServerSpecBase.$anonfun$new$98(ClientServerSpec.scala:950)