[core] Update the `ray.get` documentation to clarify when an exception gets raised for a list of object refs

[justinvyu]

Description

This bug highlighted a gap in the documentation: https://github.com/ray-project/ray/issues/47204

It's unclear when an error gets raised when one of the N tasks in a ray.get call fails. The expected behavior should be raising immediately any one of the tasks fails.

Link

https://docs.ray.io/en/latest/ray-core/api/doc/ray.get.html#ray.get

Exception – An exception is raised if the task that created the object or that created one of the objects raised an exception.

[anyscalesam]

Correct behavior is when something fails it should immediately raise an exception...

[jjyao]

@dentiny can you take this?

[dentiny]

@dentiny can you take this?

Sure, seems a good opportunity to learn ray behavior :-) Let me know if I mis-understand.