feat(backend): Add event type to span data

[cleptric]

No description provided.

[codecov]

Bundle Report

Bundle size has no change ✅

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 24.85%. Comparing base (99d8c3b) to head (c099b00).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #233      +/-   ##
============================================
+ Coverage     24.81%   24.85%   +0.04%     
  Complexity      315      315              
============================================
  Files            77       77              
  Lines          3434     3436       +2     
============================================
+ Hits            852      854       +2     
  Misses         2582     2582              

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