[BUG] Fix ray wait in RayPartitionSet (Eventual-Inc#3251)

Closes: Eventual-Inc#3249 

Ray's `ray.wait` is supposed to:

1. Defaults to `fetch_local=True` which will supposedly fetch data to
wherever the wait is called before returning
2. Defaults to `num_returns=1` which will wait until only the first item
is ready before returning

This seems to not be the intended behavior here, where `RayPartitionSet`
is trying to wait on ALL the partitions to be ready, and does not want
to pull any data down to the calling site.

Co-authored-by: Jay Chia <[email protected]@users.noreply.github.com>

Author: jaychia

daft/runners/ray_runner.py

@@ -341,7 +341,7 @@ def num_partitions(self) -> int:
 
     def wait(self) -> None:
         deduped_object_refs = {r.partition() for r in self._results.values()}
-        ray.wait(list(deduped_object_refs))
+        ray.wait(list(deduped_object_refs), fetch_local=False, num_returns=len(deduped_object_refs))
 
 
 def _from_arrow_type_with_ray_data_extensions(arrow_type: pa.lib.DataType) -> DataType: