[PWGHF] Add more D variables to B0 reduced task and MLResponse

[fchinu]

No description provided.

[github-actions]

O2 linter results: ❌ 5 errors, ⚠️ 1 warnings, 🔕 3 disabled

[alibuild]

Error while checking build/O2Physics/staging for 6e081bc at 2026-08-22 12:53:

## sw/BUILD/O2Physics-latest/log
c++: fatal error: Killed signal terminated program cc1plus
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for 6e081bc at 2026-08-22 18:42:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 6 errors and 1 warnings.'
Found 6 errors and 1 warnings.
++ [[ 6 -gt 0 ]]
++ cat /sw/BUILD/fac0a8aa7af668808314f2f79c1a7b9831612797/O2Physics-code-check/errors.txt
PWGHF/Core/HfMlResponseB0ToDPi.h:41:9: error: function-like macro 'CHECK_AND_FILL_VEC_B0_FULL' used; consider a 'constexpr' template function [cppcoreguidelines-macro-usage,-warnings-as-errors]
PWGHF/Core/HfMlResponseB0ToDPi.h:43:32: error: macro argument should be enclosed in parentheses [bugprone-macro-parentheses,-warnings-as-errors]
PWGHF/Core/HfMlResponseB0ToDPi.h:51:9: error: function-like macro 'CHECK_AND_FILL_VEC_B0_FUNC' used; consider a 'constexpr' template function [cppcoreguidelines-macro-usage,-warnings-as-errors]
PWGHF/Core/HfMlResponseB0ToDPi.h:59:9: error: function-like macro 'CHECK_AND_FILL_VEC_B0' used; consider a 'constexpr' template function [cppcoreguidelines-macro-usage,-warnings-as-errors]
PWGHF/Core/HfMlResponseB0ToDPi.h:67:9: error: function-like macro 'CHECK_AND_FILL_VEC_B0_INDEX' used; consider a 'constexpr' template function [cppcoreguidelines-macro-usage,-warnings-as-errors]
PWGHF/TableProducer/candidateCreatorB0.cxx:90:76: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
++ [[ 1 -gt 0 ]]
++ cat /sw/BUILD/fac0a8aa7af668808314f2f79c1a7b9831612797/O2Physics-code-check/warnings.txt
PWGHF/D2H/Tasks/taskB0Reduced.cxx:391:11: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
++ [[ 6 -gt 0 ]]
++ exit 1
--

Full log here.