[backend] fix filtersRepresentatives when values id is not existing

[jpkha]

fix filtersRepresentatives when values id is not existing

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (949fac8) 65.69% compared to head (a882705) 65.68%.
Report is 5 commits behind head on master.

Files	Patch %	Lines
...cti-graphql/src/utils/filtering/filtering-utils.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6009      +/-   ##
==========================================
- Coverage   65.69%   65.68%   -0.01%     
==========================================
  Files         539      539              
  Lines       63534    63534              
  Branches     5131     5130       -1     
==========================================
- Hits        41737    41734       -3     
- Misses      21797    21800       +3     

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