[frontend] replace icon anchor on minimap (#6599)

[frapuks]

Proposed changes

• Replace icon anchor on minimap

Related issues

• Markers on map are not placed at the right place #6599

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case (coverage and e2e)
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

• I use 12 because it's approximatly 25 (icon size) / 2, to replace anchor on icon center
• I replace too popup anchor, even if not used

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.70%. Comparing base (d9694b1) to head (b5fdb21).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6639   +/-   ##
=======================================
  Coverage   67.69%   67.70%           
=======================================
  Files         532      532           
  Lines       65144    65144           
  Branches     5470     5470           
=======================================
+ Hits        44101    44104    +3     
+ Misses      21043    21040    -3     

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