[CODE HEALTH] Fix clang-tidy warnings, part 2

[marcalff]

Fixes # (issue)

Changes

Please provide a brief description of the changes here.

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.00%. Comparing base (35a747c) to head (c9fd382).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3872      +/-   ##
==========================================
+ Coverage   89.99%   90.00%   +0.02%     
==========================================
  Files         225      225              
  Lines        7170     7180      +10     
==========================================
+ Hits         6452     6462      +10     
  Misses        718      718              

Files with missing lines	Coverage Δ
...clude/opentelemetry/sdk/common/atomic_unique_ptr.h	100.00% <ø> (ø)
...y/sdk/instrumentationscope/instrumentation_scope.h	100.00% <100.00%> (ø)
...pentelemetry/sdk/logs/batch_log_record_processor.h	100.00% <ø> (ø)
sdk/include/opentelemetry/sdk/logs/processor.h	100.00% <100.00%> (ø)
...pentelemetry/sdk/metrics/aggregation/aggregation.h	100.00% <100.00%> (ø)
...metry/sdk/metrics/aggregation/aggregation_config.h	89.48% <ø> (ø)
...e/opentelemetry/sdk/metrics/data/circular_buffer.h	100.00% <100.00%> (ø)
...nclude/opentelemetry/sdk/metrics/data/point_data.h	96.30% <100.00%> (+0.15%)	⬆️
...opentelemetry/sdk/metrics/export/metric_producer.h	100.00% <100.00%> (ø)
.../include/opentelemetry/sdk/metrics/metric_reader.h	50.00% <ø> (ø)
... and 5 more

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