Put the pilot's own vehicle on the Winners Circle

Your own vehicle is built insideEntity - a cockpit and no hull, because
you are sitting in it and never see it. That is fine for a race and wrong
for a podium: from the presentation camera your spot on the stand was the
one that was empty, and on a single-pod race that is the whole picture.

The renderer now gives the viewpoint entity an exterior before the shot.
Disconnected_Eye is the engine's own switch for this case, documented as
being there "so higher level renderers can fix the eye in one spot and
watch the viewpoint entity drive around", and it is what makes
NotifyOfNewInterestingEntity choose outsideEntity.

The exterior is added alongside what is already there rather than by
tearing the entity down and rebuilding it. Teardown-and-rebuild is the
path the interest manager uses constantly for scenery dropping out of
range, so it looked safe, but it is not safe for the viewpoint entity:
that one is never uninteresting, the eye renderable goes down with it,
and doing it mid-mission stops the scene rendering at all - the screen
went black from the moment the podium came up and never came back.
Adding the renderables directly does the same job with nothing removed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

RP_L4/RPL4APP.cpp

@@ -215,6 +215,15 @@ void
 		return;
 	}
 
+	//
+	//---------------------------------------------------------------------
+	// Your own vehicle is built as a cockpit with no hull, so from any
+	// camera outside it there is nothing where you should be - on the stand
+	// you would be the one empty spot. Turn it inside out before the shot.
+	//---------------------------------------------------------------------
+	//
+	dpl_renderer->ShowViewpointFromOutside();
+
 	//
 	//---------------------------------------------------------------------
 	// The name plates are drawn per rank slot, so they have to be re-sorted