[frontend] correctly display observable types in filters list (#9857)

[Archidoit]

Proposed changes

In filters of type 'main observable type', the list of possible values should be observables types that are:

• translated
• with correct icon before

Related issues

#9857

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.29%. Comparing base (a4db997) to head (c95604a).
Report is 9 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9901      +/-   ##
==========================================
+ Coverage   64.27%   64.29%   +0.01%     
==========================================
  Files         655      655              
  Lines       62933    62933              
  Branches     6960     6967       +7     
==========================================
+ Hits        40453    40460       +7     
+ Misses      22480    22473       -7     

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