Show existing LOIs in draw area and drop pin tasks

[andreia-ferreira]

Fixes #3482

Screen_recording_20260805_193830.webm

@shobhitagarwal1612 PTAL?

[codecov]

Codecov Report

❌ Patch coverage is 77.27273% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.07%. Comparing base (ea42f2d) to head (74b1560).

Files with missing lines	Patch %	Lines
...tacollection/tasks/point/DropPinTaskMapFragment.kt	0.00%	2 Missing ⚠️
...ollection/tasks/polygon/DrawAreaTaskMapFragment.kt	0.00%	2 Missing ⚠️
...oundplatform/android/ui/common/BaseMapViewModel.kt	94.44%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3871      +/-   ##
============================================
+ Coverage     68.03%   68.07%   +0.04%     
- Complexity     1883     1886       +3     
============================================
  Files           411      411              
  Lines         10881    10899      +18     
  Branches       1426     1427       +1     
============================================
+ Hits           7403     7420      +17     
  Misses         2735     2735              
- Partials        743      744       +1     

Files with missing lines	Coverage Δ
...oundplatform/android/ui/common/BaseMapViewModel.kt	64.06% <94.44%> (+4.60%)	⬆️
...tacollection/tasks/point/DropPinTaskMapFragment.kt	13.33% <0.00%> (-0.96%)	⬇️
...ollection/tasks/polygon/DrawAreaTaskMapFragment.kt	47.82% <0.00%> (ø)

... and 1 file with indirect coverage changes

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[shobhitagarwal1612]

Should we give some toggle button to the users instead of forcefully enabling it for everyone?
Was this not considered due to some reason?

[andreia-ferreira]

except for own submissions, polygon visibility is already controlled by the survey's data visibility setting (whether data is visible to all participants or not). An in-app toggle wasn't added since the immediate goal was to prevent data collectors from drawing overlapping geometries because they can't see what's already on the map. But if needed we can always add a toggle later 👍