Fix intermittent NRE in ServerSettings.Create due to config injection race#3419

Aaronontheweb merged 1 commit intoakkadotnet:devakkadotnet/Akka.Management:devfrom

Aaronontheweb:fix/hosting-http-config-raceAaronontheweb/Akka.Management:fix/hosting-http-config-raceCopy head branch name to clipboard