Cover PendingRequests calss with logs

[mykolamalik]

The extended logs are under the ifdef, so they don't appear in production.

This is a temporary commit to extend the logs for certain integration tests, so that we could have more insights from the CI failed psv and sv jobs. This commit will be reverted once OCMAM-771 is resolved.

Relates-To: OCMAM-771

[codecov]

Codecov Report

❌ Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 80.30%. Comparing base (8ce8ddc) to head (10b3f8a).

Files with missing lines	Patch %	Lines
olp-cpp-sdk-core/src/client/PendingRequests.cpp	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1714      +/-   ##
==========================================
- Coverage   80.30%   80.30%   -0.00%     
==========================================
  Files         356      356              
  Lines       14285    14284       -1     
  Branches     1564     1563       -1     
==========================================
- Hits        11471    11470       -1     
- Misses       2182     2184       +2     
+ Partials      632      630       -2     

Files with missing lines	Coverage Δ
olp-cpp-sdk-core/src/client/PendingRequests.cpp	92.31% <83.33%> (+0.31%)	⬆️

... and 2 files with indirect coverage changes

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