fix not receiving searches and suggestions to kb_usage

[drf7]

Description

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How was this PR tested?

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.46%. Comparing base (29e58ec) to head (9d15fc0).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2349   +/-   ##
=======================================
  Coverage   86.45%   86.46%           
=======================================
  Files         369      369           
  Lines       22639    22648    +9     
=======================================
+ Hits        19573    19582    +9     
  Misses       3066     3066           

Flag	Coverage Δ
nucliadb	73.12% <100.00%> (+0.01%)	⬆️
nucliadb-ingest	29.49% <0.00%> (-0.02%)	⬇️
nucliadb-reader	25.15% <0.00%> (-0.02%)	⬇️
nucliadb-search	37.39% <100.00%> (+0.03%)	⬆️
nucliadb-standalone	47.70% <60.00%> (+<0.01%)	⬆️
nucliadb-train	46.64% <60.00%> (+<0.01%)	⬆️
nucliadb-writer	40.39% <0.00%> (-0.03%)	⬇️
nucliadb_dataset	60.09% <ø> (ø)
nucliadb_models	85.33% <ø> (ø)
nucliadb_sdk	77.48% <ø> (ø)
nucliadb_sidecar	94.23% <ø> (ø)
nucliadb_telemetry	86.57% <ø> (ø)
nucliadb_utils	82.81% <ø> (ø)

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