GT-2283 Make the Language Filter SearchBar sticky

[frett]

• lift the languages menu expanded boolen out of the LanguagesFilter
• add a couple paparazzi tests for the LanguageFilter
• make the searchbar sticky for the languages filter menu

[codecov]

Codecov Report

Attention: Patch coverage is 78.37838% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 36.76%. Comparing base (c8a3ccd) to head (b725ed1).

Files	Patch %	Lines
...org/cru/godtools/ui/dashboard/tools/ToolFilters.kt	74.07%	3 Missing and 4 partials ⚠️
.../cru/godtools/ui/dashboard/tools/ToolsPresenter.kt	87.50%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3425      +/-   ##
===========================================
- Coverage    36.76%   36.76%   -0.01%     
===========================================
  Files          446      446              
  Lines        10882    10891       +9     
  Branches      2454     2455       +1     
===========================================
+ Hits          4001     4004       +3     
- Misses        6170     6179       +9     
+ Partials       711      708       -3     

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