ROLE_AutonomousProxy isn't set on client owned Actors during begin play

[ernopp]

Steps to reproduce

1. Output the LocalRole of the player's character during BeginPlay
2. Notice that it is not ROLE_AutonomousProxy
3. Add a short delay before querying, and notice that the role is ROLE_AutonomousProxy

Internal Ticket

https://improbableio.atlassian.net/browse/UNR-2475