- Add stop_live() method to ConsoleFormatter to clean up Live sessions
- Call cleanup in FlowFinishedEvent and CrewKickoffCompletedEvent handlers
- Add comprehensive tests for Live session cleanup functionality
- Fixes issue #3136 where logging output was suppressed after CrewAI operations
The issue was that Rich Live sessions were not being explicitly stopped
when CrewAI flows or crews completed, leaving the terminal in a state
where subsequent logging output would be suppressed until process exit.
This fix ensures that Live sessions are properly cleaned up by:
1. Adding a stop_live() method that safely stops and clears Live sessions
2. Calling this cleanup method in the appropriate event handlers
3. Adding tests to prevent regression
Resolves#3136
Co-Authored-By: Jo\u00E3o <joao@crewai.com>