Ensure all libcudf APIs run on cudf's default stream

[vyasr]

Description

This PR corrects a couple of places where we are running on the CUDA default stream instead of cudf's default stream.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (branch-22.10@204a09c). Click here to learn what that means.
Patch has no changes to coverable lines.

Additional details and impacted files

@@               Coverage Diff               @@
##             branch-22.10   #11759   +/-   ##
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  Misses                  ?     2717           
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[upsj]

LGTM!

[vyasr]

@gpucibot merge