Include SpanContext information in Context Debug

[bantonsson]

Changes

This includes SpanContext information in the Debug output for Context if tracing is enabled. It also changes the number of entries to include if there is a Span in the Context.

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 79.3%. Comparing base (1da35a9) to head (2b74e82).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #2365   +/-   ##
=====================================
  Coverage   79.2%   79.3%           
=====================================
  Files        122     122           
  Lines      21539   21569   +30     
=====================================
+ Hits       17069   17110   +41     
+ Misses      4470    4459   -11     

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