[PWGCF] Add MC process for cascades' correlation

[fuchuncui]

Add two process for cascades' MCsame and MCmix dihardon correlation
Add pt efficiency for cascades
Fix a bug for Nch cut

[github-actions]

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

[alibuild]

Error while checking build/O2Physics/code-check for 211fc1f at 2026-09-23 16:20:

## sw/BUILD/O2-latest/log
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260923-0000/daily-20260923-0000/Detectors/TPC/base/src/TPCBaseLinkDef.h:75:56
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260923-0000/daily-20260923-0000/Detectors/TPC/base/src/TPCBaseLinkDef.h:83:135
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260923-0000/daily-20260923-0000/Detectors/TPC/base/src/TPCBaseLinkDef.h:84:135
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260923-0000/daily-20260923-0000/Detectors/Upgrades/ALICE3/ECal/base/src/ECalBaseLinkDef.h:19:48
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260923-0000/daily-20260923-0000/Detectors/Upgrades/ALICE3/RICH/base/src/RICHBaseLinkDef.h:18:48
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260923-0000/daily-20260923-0000/Detectors/Upgrades/ALICE3/MID/base/src/MI3BaseLinkDef.h:18:47


## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 3 errors and 230 warnings.'
Found 3 errors and 230 warnings.
++ [[ 3 -gt 0 ]]
++ cat /sw/BUILD/923678e296ee9eddd409db521920d6541ce564c0/O2Physics-code-check/errors.txt
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:937:13: error: Variable 'rad' with floating point type 'double' should not be used as a loop counter [clang-analyzer-security.FloatLoopCounter,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:1036:13: error: Variable 'rad' with floating point type 'double' should not be used as a loop counter [clang-analyzer-security.FloatLoopCounter,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:1143:13: error: Variable 'rad' with floating point type 'double' should not be used as a loop counter [clang-analyzer-security.FloatLoopCounter,-warnings-as-errors]
++ [[ 230 -gt 0 ]]
++ cat /sw/BUILD/923678e296ee9eddd409db521920d6541ce564c0/O2Physics-code-check/warnings.txt
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:65:78: warning: macro argument should be enclosed in parentheses [bugprone-macro-parentheses]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:67:8: warning: constructor does not initialize these fields: ccdb [cppcoreguidelines-pro-type-member-init]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:258:29: warning: use designated initializer list to initialize 'ValidParticle' [modernize-use-designated-initializers]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:316:52: warning: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:318:53: warning: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:321:50: warning: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:323:51: warning: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:326:55: warning: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:328:56: warning: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:331:54: warning: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:333:55: warning: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:368:36: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:420:39: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:453:11: warning: variable 'cent' is not initialized [cppcoreguidelines-init-variables]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:502:116: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:504:112: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:506:112: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:508:68: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:510:66: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:512:66: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:516:66: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:518:64: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:520:64: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:522:66: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:524:64: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:526:64: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:529:68: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx:531:66: warning: statement should be inside braces [readability-braces-around-statements]
[0 more errors; see full log]

Full log here.