refactor(live_location_share): exclude live location events of own user

[torrybr]

This change ensures that the user's own live location events are excluded from the location sharing stream. Since the user's location is already represented on the map by the blue dot, processing their own events is redundant and unnecessary.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.42%. Comparing base (fe3cc09) to head (1d1003c).
Report is 22 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4535   +/-   ##
=======================================
  Coverage   85.42%   85.42%           
=======================================
  Files         285      285           
  Lines       32112    32112           
=======================================
  Hits        27433    27433           
  Misses       4679     4679           

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[poljar]

Makes sense, though the test could be improved with our new mocking API.

[poljar]

Much nicer, thanks.