Prefect ray raises a RaySystemError when it exits

[fyrestone]

Bug summary

prefect-ray has a ray.get in PrefectRayFuture.__del__ which is not a good design.

• It will call a sync ray.get in an async loop.
• It may raise a RaySystemError when exiting.

  Exception ignored in: <function PrefectRayFuture.__del__ at 0x14565fb97a60>
  Traceback (most recent call last):
  File "/home/user/.pyenv/versions/3.11.9/lib/python3.11/site-packages/prefect_ray/task_runners.py", line 154, in __del__
  File "ray/_private/auto_init_hook.py", line 22, in auto_init_wrapper
  File "ray/_private/client_mode_hook.py", line 103, in wrapper
  File "ray/_private/worker.py", line 2593, in get
  File "ray/_private/worker.py", line 686, in check_connected
  ray.exceptions.RaySystemError: System error: Ray has not been started yet. You can start Ray with 'ray.init()'.

Version info (prefect version output)

Version:             3.0.0rc20
API version:         0.8.4
Python version:      3.11.9
Git commit:          6dd34dc6
Built:               Thu, Aug 29, 2024 12:06 PM
OS/Arch:             linux/x86_64
Profile:             default
Server type:         server
Pydantic version:    2.8.2
Integrations:
  prefect-ray:       0.4.0rc2

Additional context

No response

[zzstoatzz]

hi @fyrestone - thank you for the issue!

would you be able to include an MRE or otherwise what lead you to this error?