Blackouts - division by zero error when using timeLimit = 0

[alhasacademy96]

Describe the Bug

From AAI 3.1.3 upwards it seems the ability to use blackouts with timeLimit = 0 is broken.

Specific Error produced:
Division by zero: In the LightStatus method, the step is compared against _nextFrameSwitch * agentDecisionInterval. If agentDecisionInterval is 0 (which is possible if timeLimit is 0), it will result in a division by zero error. Furthermore, the error occurs because If timeLimit is set to 0 and blackouts are specified (can be any value), it creates a contradiction. The blackouts are meant to occur at specific steps within the episode, but an episode with a timeLimit of 0 has no steps to begin with.

To Reproduce
Steps to reproduce the behavior:

!ArenaConfig
arenas:
  0: !Arena
    passMark: 2
    timeLimit: 0
    blackouts: [25, 60]
    items:
    - !Item
      name: Agent
      positions:
      - !Vector3 {x: 20, y: 1, z: 2}
      rotations: [0]
      frozenAgentDelays: [10]
    - !Item
      name: Wall
      positions:
      - !Vector3 {x: 20, y: 0, z: 10}
      - !Vector3 {x: 20, y: .5, z: 2.5}
      - !Vector3 {x: 30, y: 0, z: 30}
      - !Vector3 {x: 5, y: 0, z: 38}
      - !Vector3 {x: 35, y: 0, z: 38}
      - !Vector3 {x: 20, y: 0, z: 38}
      - !Vector3 {x: 20, y: 0, z: 39.9}
      rotations: [0,0,0,0,0,45,0]
      colors:
      - !RGB {r: 0, g: 0, b: 255}
      - !RGB {r: 0, g: 0, b: 255}
      - !RGB {r: -1, g: -1, b: -1} #color parameter
      - !RGB {r: 0, g: 0, b: 255}
      - !RGB {r: 0, g: 0, b: 255} 
      - !RGB {r: 222, g: 0, b: 0}
      - !RGB {r: 222, g: 0, b: 0}
      sizes:
      - !Vector3 {x: 2, y: .5, z: 19.5}
      - !Vector3 {x: 2, y: .5, z: 5}
      - !Vector3 {x: 10, y: 0.5, z: 1}
      - !Vector3 {x: 1, y: .5, z: 2}
      - !Vector3 {x: 1, y: .5, z: 2}
      - !Vector3 {x: 2, y: 2, z: 2}
      - !Vector3 {x: 10, y: 2, z: 0.1}

Expected Behavior
AAI handles the scenario where timeLimit is 0 and blackouts are used correctly. It allows for infinite blackout patterns using negative values in the blackout sequence, and the episodeLength (timeLimit) does not impact the blackout functionality.

Desktop (please complete the following information):

• OS: [Windows, Linux, macOS]
• Unity Version [e.g. 2021.3.21f1]

Additional Context
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Screenshots
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