[frontend] improve taxonomics retrieval strategy (#1734)

[guillaumejparis]

Close #1734

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 32.08%. Comparing base (0ff0b50) to head (2ec6017). Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1735   +/-   ##
=========================================
  Coverage     32.08%   32.08%           
  Complexity     1609     1609           
=========================================
  Files           561      561           
  Lines         16850    16850           
  Branches        974      974           
=========================================
  Hits           5406     5406           
  Misses        11200    11200           
  Partials        244      244           

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