add global toggle to find challenge page

[CollinBeczak]

Backend: maproulette/maproulette-backend#1136

Resolves: #2373 & #2350

This PR introduces a new "Show Global" filter on the find challenges page. When unchecked, this filter excludes all challenges not classified as global. The global classification is determined by backend conditions, currently defined as challenges whose tasks span over 180 degrees horizontally or 90 degrees vertically on the map.

[codecov]

Codecov Report

Attention: Patch coverage is 26.66667% with 11 lines in your changes missing coverage. Please review.

Project coverage is 23.47%. Comparing base (ecfbb75) to head (3b79c07).
Report is 12 commits behind head on main.

Files	Patch %	Lines
...vices/Challenge/ChallengeGlobal/ChallengeGlobal.js	25.00%	2 Missing and 1 partial ⚠️
src/components/ChallengePane/ChallengePane.js	60.00%	2 Missing ⚠️
...components/HOCs/WithSearchRoute/WithSearchRoute.js	0.00%	2 Missing ⚠️
src/services/Challenge/Challenge.js	0.00%	1 Missing and 1 partial ⚠️
src/services/Search/Search.js	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2382      +/-   ##
==========================================
- Coverage   23.48%   23.47%   -0.01%     
==========================================
  Files         649      650       +1     
  Lines       22503    22515      +12     
  Branches     6927     6930       +3     
==========================================
+ Hits         5285     5286       +1     
- Misses      14405    14413       +8     
- Partials     2813     2816       +3     

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