Double-clicking a level asset in the content browser loads the level with EWorldType::Inactive

1. Put a break-point in FWorldDelegates::OnPostWorldInitialization
2. Double-click a level asset in the content browser
3. The level comes in as EWorldType::Inactive

Loading the level through the menus loads it as EWorldType::Editor and launching PIE loads as EWorldType::PIE as expected. Licensee is relying on this delegate and would like the correct world type