failed: RouteDirectivesSpec -> should allow easy handling of futured ToResponseMarshallers

[octonato]

https://github.com/akka/akka-http/actions/runs/6128283335/job/16635127208#step:7:3684

[3683](https://github.com/akka/akka-http/actions/runs/6128283335/job/16635127208#step:7:3684)
[info] - should allow easy handling of futured ToResponseMarshallers *** FAILED *** (1 second, 639 milliseconds)
[info]   Request was neither completed nor rejected within 1 second (RouteTest.scala:61)
[info]   org.scalatest.exceptions.TestFailedException:
[info]   at akka.http.scaladsl.testkit.TestFrameworkInterface$Scalatest.failTest(TestFrameworkInterface.scala:27)
[info]   at akka.http.scaladsl.testkit.TestFrameworkInterface$Scalatest.failTest$(TestFrameworkInterface.scala:27)
[info]   at akka.http.scaladsl.server.directives.RouteDirectivesSpec.failTest(RouteDirectivesSpec.scala:21)
[info]   at akka.http.scaladsl.testkit.RouteTestResultComponent$RouteTestResult.failNeitherCompletedNorRejected(RouteTestResultComponent.scala:107)
[info]   at akka.http.scaladsl.testkit.RouteTestResultComponent$RouteTestResult.rawResponse(RouteTestResultComponent.scala:64)
[info]   at akka.http.scaladsl.testkit.RouteTest.rawResponse(RouteTest.scala:68)
[info]   at akka.http.scaladsl.testkit.RouteTest.status(RouteTest.scala:86)
[info]   at akka.http.scaladsl.testkit.RouteTest.status$(RouteTest.scala:86)
[info]   at akka.http.scaladsl.server.directives.RouteDirectivesSpec.status(RouteDirectivesSpec.scala:21)
[info]   at akka.http.scaladsl.server.directives.RouteDirectivesSpec.$anonfun$new$38(RouteDirectivesSpec.scala:111)
[info]   at scala.util.DynamicVariable.withValue(DynamicVariable.scala:62)
[info]   at akka.http.scaladsl.testkit.RouteTest.$anonfun$check$1(RouteTest.scala:61)
[info]   at akka.http.scaladsl.testkit.RouteTestResultComponent$RouteTestResult.$tilde$greater(RouteTestResultComponent.scala:56)
[info]   at akka.http.scaladsl.server.directives.RouteDirectivesSpec.$anonfun$new$33(RouteDirectivesSpec.scala:111)
[info]   at org.scalatest.OutcomeOf.outcomeOf(OutcomeOf.scala:85)
[info]   at org.scalatest.OutcomeOf.outcomeOf$(OutcomeOf.scala:83)
[info]   at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
[info]   at org.scalatest.Transformer.apply(Transformer.scala:22)
[info]   at org.scalatest.Transformer.apply(Transformer.scala:20)