Non-ghost curse fails against invulnerable moves and good as gold

[Tempo-anon]

Currently there is no way to make a move target conditional before the move is chosen. For the implementation of curse it targets but has a hardcoded branch logic that does the stat change if the user is not ghost type. Because it is technically classified as a targeting status move, it fails completely when the opponent is in the invulnerable phase of a move like dig/fly/dive or if they have good as gold because the move is cancelled immediately