[Gameplay] Mordekaiser's harvester of sorrow has its duration halved when placed on an ally unit

The bug: Mordekaiser's Harvester of sorrow (W) gets a halved duration when it attaches to any allied unit. This means timing the detonation on the spell becomes much more difficult than it should be due to unreliability and inconsistency - when the spell doesnt latch on to any allies its duration is significantly longer, making it much easier to time against multiple targets.