science/geant4: Update to 11.3.0

Port now builds with Qt6 UI and visualisation.

Updated datasets:

• CHANNELING: New, 1.0
• EMLOW: 8.5 -> 8.6.1
• ENSDFSTATE: 2.3 -> 3.0
• NUDEXLIB: New, 1.0
• PARTICLEXS: 4.0 -> 4.1
• PhotonEvaporation: 5.7 -> 6.1
• RadioactiveDecay: 5.6 -> 6.1.2
• URRPT: New, 1.1

Release notes:
https://geant4.web.cern.ch/download/release-notes/notes-v11.3.0.html

PR: 285068