Wrong Role in BeginPlay of startup actors respawned by a replay scrub

The Role/RemoteRole of net startup actors that get respawned during the replay scrub will be incorrect/swapped during BeginPlay (but not later for any onreps we process).

• Make a new blueprint actor. Place it in a test map.
• In the BeginPlay event, log whether or not the actor is the authority.
• Add a replicated integer value to the actor and increment it on a timer if server/authority.
• Play the map in PIE, record a replay (demorec/demostop) and then play it back.
• Scrub the replay (with the timeline or demo.gototimeinseconds depending on the project).
• Verify that the authority log is the same (always client, etc) when the replay begins as well as any time you scrub.