Yorick pets vs. %HP damage

Intended interaction: Yorick's pets take regular damage from AoE abilities.

Bug: Yorick's pets take reduced damage from AoE abilities which deal %HP damage, even reducing the minimum and flat damage. This applies to both mist walkers and the maiden.

After more testing, I found that the reduction in damage bug happens only if the ability deals %max HP damage. But abilities which don't deal %HP apply normally as intended. Given the fact Yorick isn't a high priority pick and %HP AoE abilities are few, especially in top lane, this bug was hard to find.