⚡ [PERF] Delay loading filter form in List Views

[Chatewgne]

Optimize List View loading by delaying the loading of filtering options.

When a List View opens, the hidden filter form only includes BBOX to maintain map zoom filtering.

When clicking the "Filter" button, the full FilterSet (including BBOX and all other attributes) loads in the pop-up.

⚠️ Breaking change: If you customize the FilterSet, it must be added to: FormatList, Filter, List, and ViewSet

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.27%. Comparing base (c04233a) to head (1edc89e).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #312      +/-   ##
==========================================
+ Coverage   91.10%   91.27%   +0.17%     
==========================================
  Files          32       32              
  Lines        2406     2442      +36     
==========================================
+ Hits         2192     2229      +37     
+ Misses        214      213       -1     

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