[PWGDQ] various improvements to the global alignment task histograms

[aferrero2707]

• added histograms for di-muon decay lengths
• added possibility to modify some of the histogram axis definitions via configurable options
• added option that reduces the size of MFT DCA histograms (enabled by default)

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 68 warnings, 🔕 5 disabled

[alibuild]

Error while checking build/O2Physics/code-check for 8ee1ec8 at 2026-09-03 15:34:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 10 errors and 0 warnings.'
Found 10 errors and 0 warnings.
++ [[ 10 -gt 0 ]]
++ cat /sw/BUILD/3f3c338eb856de4cb9699b61fdbfdaed2a162484/O2Physics-code-check/errors.txt
PWGDQ/Tasks/muonGlobalAlignment.cxx:59:1: error: included header Vector3D.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:60:1: error: included header Vector4D.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:313:18: error: no header providing "o2::vertexing::FwdDCAFitterN" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:354:10: error: no header providing "size_t" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:361:10: error: no header providing "std::stringstream" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:366:7: error: empty catch statements hide issues; to handle exceptions appropriately, consider re-throwing, handling, or avoiding catch altogether [bugprone-empty-catch,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:1213:12: error: slicing object from type 'GlobalFwdTrack' to 'TrackParCovFwd' discards 40 bytes of state [cppcoreguidelines-slicing,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:1649:15: error: no header providing "ROOT::Math::PxPyPzMVector" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:1668:17: error: no header providing "ROOT::Math::XYZVector" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:1687:8: error: no header providing "std::optional" is directly included [misc-include-cleaner,-warnings-as-errors]
++ [[ 0 -gt 0 ]]
++ [[ 10 -gt 0 ]]
++ exit 1
--

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for 059f4d1 at 2026-09-06 23:41:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 4 errors and 1 warnings.'
Found 4 errors and 1 warnings.
++ [[ 4 -gt 0 ]]
++ cat /sw/BUILD/8992a9623650db366b284caa505292af0fbda8f1/O2Physics-code-check/errors.txt
PWGDQ/Tasks/muonGlobalAlignment.cxx:60:1: error: included header Vector3D.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:61:1: error: included header Vector4D.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:1653:15: error: no header providing "ROOT::Math::PxPyPzMVector" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGDQ/Tasks/muonGlobalAlignment.cxx:1672:17: error: no header providing "ROOT::Math::XYZVector" is directly included [misc-include-cleaner,-warnings-as-errors]
++ [[ 1 -gt 0 ]]
++ cat /sw/BUILD/8992a9623650db366b284caa505292af0fbda8f1/O2Physics-code-check/warnings.txt
PWGDQ/Tasks/muonGlobalAlignment.cxx:93:10: warning: inclusion of deprecated C++ header 'stddef.h'; consider using 'cstddef' instead [modernize-deprecated-headers]
++ [[ 4 -gt 0 ]]
++ exit 1
--

Full log here.

[aferrero2707]

@mcoquet642 I have added the L_z plots to the muon alignment analysis code, to better monitor the impact of new geometries on the DCA resolution.
Could you please have a look? There are also some changes related to the MFT DCA histograms configuration, that are unrelated.
Thanks a lot!

[aferrero2707]

@mcoquet642 I have made the two-prong fitter parameters configurable as suggested.