[femutils] Use accelerator API when translating from CSR to COO

[grospelliergilles]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.54%. Comparing base (f1c7a80) to head (831f7ae).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #352      +/-   ##
==========================================
+ Coverage   69.52%   69.54%   +0.01%     
==========================================
  Files         118      118              
  Lines       14715    14722       +7     
  Branches     1983     1983              
==========================================
+ Hits        10231    10238       +7     
  Misses       4027     4027              
  Partials      457      457              

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