ray nits

[hynky1999]

1. Added logging directory validation - Warns when logging_dir is on local filesystem instead of shared storage, preventing synchronization issues in distributed clusters

2. Improved ray.wait() responsiveness - Changed to return tasks one at a time instead of waiting for all, enabling faster task scheduling and better resource utilization

3. Fixed timeout cleanup logic - Reordered operations to properly clean up timed-out tasks and prevent reference errors