Small refactor to movement (#31071)

You can now move an object into nullspace, which will call exited on
it's parent and parent area but will not call any entered.

Note that you cannot pass null into forceMove it will crash, instead use
the new proc that will call the underlying logic with a null destination

Some of the force move procs have been refactored to check that their
parent move succeeded before doing updates

code/modules/mob/living/silicon/silicon_movement.dm

@@ -4,7 +4,9 @@
 
 /mob/living/silicon/forceMove(atom/destination)
 	. = ..()
-	update_camera_location(destination)
+	//Only bother updating the camera if we actually managed to move
+	if(.)
+		update_camera_location(destination)
 
 /mob/living/silicon/proc/do_camera_update(oldLoc)
 	if(!QDELETED(builtInCamera) && oldLoc != get_turf(src))