fix(tests): hf test can be flakey if runs in parallel

[shcheklein]

Per #555 (comment)

Run HF test only once since it using actual API, token, etc. It can be expensive + it seems it might be running into some race condition (not sure yet, we can observe and do retries if needed if we see that it is still unstable)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.87%. Comparing base (4f0713d) to head (675fd7a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #559   +/-   ##
=======================================
  Coverage   87.87%   87.87%           
=======================================
  Files          96       96           
  Lines        9873     9873           
  Branches     1349     1349           
=======================================
  Hits         8676     8676           
  Misses        857      857           
  Partials      340      340           

Flag	Coverage Δ
datachain	87.81% <ø> (ø)

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