disabled default shield creation on reset

examples/shields/rl/rllibutils.py

@@ -86,7 +86,7 @@ class MiniGridShieldingWrapper(gym.core.Wrapper):
                  env,
                 shield_creator : MiniGridShieldHandler,
                 shield_query_creator,
-                create_shield_at_reset=True,    
+                create_shield_at_reset=False,
                 mask_actions=True):
         super(MiniGridShieldingWrapper, self).__init__(env)
         self.max_available_actions = env.action_space.n