[Python SDK] Every logger is always `agentfield.result_cache`

[pocesar]

Describe the bug

get_logger uses a global singleton assigned to _global_logger inside logger.py when calling with __name__ and every instance of the logger is agentfield.result_cache

Steps to reproduce

1. Go to '...'
2. Run '...'
3. See error

Expected behavior

Screenshots / Logs

Environment

• Control plane version:
• SDK version (if applicable):
• Deployment environment (local, docker, kubernetes, etc.):

Additional context