fix: use AwaitAssert for eventually-consistent cluster state in QuickRestartSpec#8183

Aaronontheweb merged 3 commits into

akkadotnet:devakkadotnet/akka.net:devfrom

Aaronontheweb:fix/quick-restart-spec-await-assertAaronontheweb/akka.net:fix/quick-restart-spec-await-assertCopy head branch name to clipboard