message: Fix Dedicated Server Crash. Prevent dedicated server from adding a ScreenCreditWidget
diff: @@ -153,7 +153,7 @@ void ACesiumCreditSystem::BeginPlay() {
  _creditsWidget =
  CreateWidget<UScreenCreditsWidget>(GetWorld(), CreditsWidgetClass);
  }
  - if (IsValid(_creditsWidget)) {
  + if (IsValid(_creditsWidget) && !IsRunningDedicatedServer()) {
  _creditsWidget->AddToViewport();
  }
  }
  