Improve extra state debug box when net debug drawing

With net debug drawing enabled, an extra debug box is drawn around some actors to indicate if the actor is always relevant or if it is distance culled. However, the strange size of this box makes net debug drawing difficult to read.

Something else to consider could be to draw a sphere around distance culled actors, in order to display the cull distance more accurately.

Place a replicated actor in the level.
Mark the actor as always relevant, or set a net cull distance on the actor.
With net.DebugDraw=1, start a multiplayer PIE session.
Observe the overly large box drawn around the actor (see screenshot).