Improve pytest detection using PYTEST_CURRENT_TEST

[xnuohz]

Close #10463, #9548, #9680, #10055, #10323

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.09%. Comparing base (c211214) to head (c4c65ba).
⚠️ Report is 116 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #10464      +/-   ##
==========================================
- Coverage   86.11%   85.09%   -1.02%     
==========================================
  Files         496      510      +14     
  Lines       33655    35963    +2308     
==========================================
+ Hits        28981    30602    +1621     
- Misses       4674     5361     +687     

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