fix: sort on all languages for anbefaltTerm, case-insensitive

[jeffreiffers]

Fixes Informasjonsforvaltning/catalog-frontend#642

[codecov]

Codecov Report

Attention: Patch coverage is 76.19048% with 5 lines in your changes missing coverage. Please review.

Project coverage is 83.90%. Comparing base (8f4f10f) to head (08a7d9a).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...n/no/fdk/concept_catalog/elastic/ElasticUpdater.kt	0.00%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #388      +/-   ##
============================================
- Coverage     84.09%   83.90%   -0.20%     
- Complexity      474      476       +2     
============================================
  Files            52       52              
  Lines          1635     1640       +5     
  Branches        286      285       -1     
============================================
+ Hits           1375     1376       +1     
- Misses          102      106       +4     
  Partials        158      158              

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