[BACKPORT][Fixes #9799] Thesaurus selectbox performance in metadata editor is v…

[mattiagiupponi]

…ery slow (#9800)

• [Fixes Thesaurus selectbox performance in metadata editor is very slow #9799] Thesaurus selectbox performance in metadata editor is very slow

Co-authored-by: mattiagiupponi 51856725+mattiagiupponi@users.noreply.github.com

Checklist

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[codecov]

Codecov Report

Merging #9836 (44d5457) into 4.x (7244bdc) will increase coverage by 0.01%.
The diff coverage is 72.91%.

@@            Coverage Diff             @@
##              4.x    #9836      +/-   ##
==========================================
+ Coverage   61.34%   61.36%   +0.01%     
==========================================
  Files         821      821              
  Lines       50285    50306      +21     
  Branches     7747     7744       -3     
==========================================
+ Hits        30848    30870      +22     
+ Misses      17753    17752       -1     
  Partials     1684     1684