[PWGUD] small code additions to finetune the analysis

[jgcn]

Adding histograms for single-arm pile-up correction
Adding tags for TOF info in tracks

[github-actions]

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

[alibuild]

Error while checking build/O2Physics/code-check for 585bd03 at 2026-08-15 13:53:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 3 errors and 0 warnings.'
Found 3 errors and 0 warnings.
++ [[ 3 -gt 0 ]]
++ cat /sw/BUILD/ea9b398dc803655904fcc634cbd09068e90ac3b8/O2Physics-code-check/errors.txt
PWGUD/Tasks/upcVmRof.cxx:703:17: 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]
PWGUD/Tasks/upcVmRof.cxx:722:17: 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]
PWGUD/Tasks/upcVmRof.cxx:768:5: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
++ [[ 0 -gt 0 ]]
++ [[ 3 -gt 0 ]]
++ exit 1
--

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for 833f9b9 at 2026-08-15 16:40:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 3 errors and 0 warnings.'
Found 3 errors and 0 warnings.
++ [[ 3 -gt 0 ]]
++ cat /sw/BUILD/8a35f0e58b45bc9b1ff448f8bc8ab65be6f89e9a/O2Physics-code-check/errors.txt
PWGUD/Tasks/upcVmRof.cxx:703:17: 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]
PWGUD/Tasks/upcVmRof.cxx:722:17: 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]
PWGUD/Tasks/upcVmRof.cxx:768:5: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
++ [[ 0 -gt 0 ]]
++ [[ 3 -gt 0 ]]
++ exit 1
--

Full log here.