BuyPotionAction crashes the agent due to incorrect game state usage

[Max-Suslov]

Bug Report: BuyPotionAction Crashes the Agent

When BuyPotionAction runs, it crashes the agent. The problem occurs in action.py at line 149:

if coordinator.game.are_potions_full():

This line uses the current game state, but it should reference the last game state to avoid inconsistencies, like so:

if coordinator.last_game_state.are_potions_full():

Changing this one variable fixes the crash.

Steps to reproduce:

1. Use BuyPotionAction.
2. Observe the crash at the potion check.