Space Invaders Invisible bullets on Mode=0

I'm running this environment through the https://gymnasium.farama.org/environments/atari/space_invaders/ and found that even at the previous on the page above (Gymnasimum) there is no bullets from invaders (it is mode=0), on mode=1,4 bullets start be seeing. It doesn't like it supposed to be rendered.

https://github.com/Farama-Foundation/Arcade-Learning-Environment/assets/184706/3c287c3f-8a3a-4ff0-b7e8-fe689d33763f

Reproduce the Space Invaders environment through the linked Gymnasium page, comparing mode=0 with modes 1 and 4. Trace the rendering path for invader bullets and verify that the fix makes those bullets visible in mode=0 without changing the other modes.

Written by the indexing model from the issue text.