Add placeholder support for addtag

MM Premium 5.3.5 || Papermc 169 (1.20.1) Tags do not appear to support placeholders based from the skill below:

Sunny:
  Type: wolf
  Damage: 0.01
  Health: 500
  Options:
    Marker: false
    MovementSpeed: 0.2
  Skills:
  - model{mid=explosive_barrel;nametag=false} @Self ~onSpawn
  - addtag{t=MyOwner<target.name>} @Owner ~onSpawn
  - m{m=Are you my mummy?} @owner ~onDamaged ?~hastag{t=MyOwner<target.name>}

I would expect the message skill to say "Are you my mummy" to the owner yet this only works if I take the placeholder out, but leaves an edge case where multiple casters can trigger the skill if they have used the casting item before. (While they have the none unique tag)