This pull request makes a targeted change to the subscription logic in the MessageManager class to improve how agent subscription timing is handled. Instead of subscribing agents at time 1, the logic now considers a scenario-specific offset, improving flexibility and correctness in agent initialization.

Subscription timing logic update:

• Updated the condition in the subscribe method of message_manager.py to subscribe agents when agent_info.get_time() equals the scenario's KERNEL_AGENTS_IGNOREUNTIL value plus one, instead of always at time 1. This allows for scenario-based control over when agents begin subscribing.