WorldPartitionChangelistValidator incorrectly flags actors referencing the level script actor as invalid

When validating a change list that contains an actor that references the level script in the world (e.g. it has an event bound on the level script graph) it will fail changelist validation 100% of the time (however it will pass map checks just fine).

From scratch:

• Have a project under source control

• Drop a simple cube into an empty WP map

• Open the level script with the cube selected and add an event for 'on overlap' to the level script graph

• Save everything

• Map check, notice no errors are called out

• Validate the changelist in UE's source control- notice it calls out an invalid reference to an actor (and the actor is only called out via GUID)

With the attached project (see addl info URL):

• Put the attached project under source control so you can do CL validation.

• Mark the files in /Content for add

• Open the project

• Map check the 'Map' map, it will pass

• Validate the changelist adding the /Content folder, it will fail validation.