[PWGLF] Refactor MC condition and histogram registration

[njacazio]

No description provided.

[github-actions]

O2 linter results: ❌ 1 errors, ⚠️ 30 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/code-check for 073905f at 2026-08-18 10:35:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 12 errors and 201 warnings.'
Found 12 errors and 201 warnings.
++ [[ 12 -gt 0 ]]
++ cat /sw/BUILD/dba59d803f8bf3a0ce2c2cd9183f09428f0c49ec/O2Physics-code-check/errors.txt
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:79:8: error: constructor does not initialize these fields: nBinspT, hEffpTEta_proton, hEffpTEta_antiproton, hEffpTEta_deuteron, hEffpTEta_antideuteron, ccdb, pdgDB [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:217:5: error: switching on non-enum value without default case may not cover all cases [bugprone-switch-missing-default-case,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:471:38: error: repeated branch body in conditional chain [bugprone-branch-clone,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:568:38: error: repeated branch body in conditional chain [bugprone-branch-clone,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:676:11: error: switching on non-enum value without default case may not cover all cases [bugprone-switch-missing-default-case,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:752:97: error: the parameter 'filepath' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:752:115: error: the parameter 'histname' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:754:5: error: use auto when initializing with a template cast to avoid duplicating the type name [modernize-use-auto,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:759:24: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:764:28: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:769:26: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:774:30: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
++ [[ 201 -gt 0 ]]
++ cat /sw/BUILD/dba59d803f8bf3a0ce2c2cd9183f09428f0c49ec/O2Physics-code-check/warnings.txt
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:641:68: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:644:77: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:817:58: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:819:40: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:822:31: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:824:31: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:826:33: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:828:33: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:831:31: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:894:60: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:896:42: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:898:60: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:900:42: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:903:33: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:905:33: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:909:87: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:911:87: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:916:36: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:918:36: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:923:36: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:925:36: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:936:60: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:938:42: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:940:60: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:942:42: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:945:33: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:947:33: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx:951:87: warning: statement should be inside braces [readability-braces-around-statements]
[0 more errors; see full log]

Full log here.