Diagnose trigger tracks selection losses in hStrangeCorrelation.cxx

[kcui1]

Adds a labeled diagnostic histogram to identify the first TriggerTracks selection condition responsible for losing best-collision truth triggers.

[github-actions]

O2 linter results: ❌ 12 errors, ⚠️ 2 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/code-check for ad959ee at 2026-08-06 17:58:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 30 errors and 0 warnings.'
Found 30 errors and 0 warnings.
++ [[ 30 -gt 0 ]]
++ cat /sw/BUILD/2efa76f3e6ebbf3712fcdf54c9cb31c10d6d3f4a/O2Physics-code-check/errors.txt
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:95:8: error: constructor does not initialize these fields: ccdb, pdgDB [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:646:5: error: Variable 'radius' with floating point type 'double' should not be used as a loop counter [clang-analyzer-security.FloatLoopCounter,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:1022:5: error: Variable 'r' with floating point type 'double' should not be used as a loop counter [clang-analyzer-security.FloatLoopCounter,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:2673:9: error: the 'empty' method should be used to check for emptiness instead of comparing to an empty object [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:2851:9: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:2954:9: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3105:9: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3260:9: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3345:11: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3402:13: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3461:13: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3511:11: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3614:13: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3644:9: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3809:26: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3823:11: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3856:26: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3902:26: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3903:30: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3904:30: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3958:28: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3971:26: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:3982:28: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:4325:13: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:4332:9: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:4390:110: error: use 'contains' to check for membership [readability-container-contains,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:4456:140: error: use 'contains' to check for membership [readability-container-contains,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:4612:9: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx:4642:9: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGLF/Utils/inelGt.h:117:11: error: using integer absolute value function 'abs' when argument is of floating point type [clang-diagnostic-absolute-value,-warnings-as-errors]
++ [[ 0 -gt 0 ]]
++ [[ 30 -gt 0 ]]
++ exit 1
--

Full log here.