[MERGED PR] Makes specific antag garb acid immune(wizards excluded)

[Flaborized]

I like this, traitor items and other gear that's unreplaceable easily that belongs to antag should be fairly difficult to destroy, no fun to have your football helmet deleted by a click.

May even be good to go further with it later and prevent the melting of stuff like cluwne gear or the staff of cthuhlu, though this may be out of scope for this particular PR.