[#13243] Update otlp span event

[jaehong-kim]

#13243

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 33.18%. Comparing base (56d6389) to head (6fee27e).
⚠️ Report is 23 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #13301      +/-   ##
============================================
- Coverage     33.23%   33.18%   -0.05%     
- Complexity    10967    10974       +7     
============================================
  Files          4062     4070       +8     
  Lines         94246    94432     +186     
  Branches       9817     9830      +13     
============================================
+ Hits          31322    31337      +15     
- Misses        60251    60422     +171     
  Partials       2673     2673              

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