chore(appender-tracing): remove use of tracing-opentelemetry

[bantonsson]

Fixes #3190

Changes

Removes the dependency on tracing-opentelemetry to get rid of the circular dependencies.

• Remove the experimental_use_tracing_span_context since
  tracing-opentelemetry now supports activating the OpenTelemetry
  context for the current tracing span.

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.7%. Comparing base (cff5728) to head (3b70f41).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #3224     +/-   ##
=======================================
- Coverage   80.8%   80.7%   -0.2%     
=======================================
  Files        128     128             
  Lines      23288   23195     -93     
=======================================
- Hits       18821   18719    -102     
- Misses      4467    4476      +9     

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[cijothomas]

Thanks! Looks good and we should be now unblocked to do rest of clean up for OTel Tracing API!

[cijothomas]

@dylanahsmith FYI, since you helped fix the issue originally. Given tracing-opentelemetry now properly activate OTel Span Context, this is no longer required. If any surprises comes, please do open an issue.