[ALICE3] Further developments for TRK

[scannito]

This PR:

• adds new staggered structure foreseen for L6 and L7
• adds tunable number of staves and tilting angle (for the time being not used by OT layers)
• systematically fixes the layer logical thickness

[Copilot]

Pull request overview

This PR updates the ALICE3 TRK segmented geometry implementation to support staggered/tilted stave placement and to compute more accurate “logical” container volumes so ROOT overlap checks behave reliably.

Changes:

• Extend segmented layer APIs to carry tilt angle and (for ML) stagger offset + configurable stave count.
• Update ML/OT layer volume construction to use analytically computed bounding radii instead of a fixed logical thickness.
• Update Detector segmented configuration (hardcoded and file-driven) to pass the new geometry parameters.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 8 comments.

File	Description
Detectors/Upgrades/ALICE3/TRK/simulation/src/TRKLayer.cxx	Implements flipped chip placement, new bounding-radii logic, staggered ML placement, and new ctor signatures.
Detectors/Upgrades/ALICE3/TRK/simulation/src/Detector.cxx	Updates segmented configuration and parsing to provide tilt/stave/stagger parameters.
Detectors/Upgrades/ALICE3/TRK/simulation/include/TRKSimulation/TRKLayer.h	Updates layer class interfaces/members for new segmented parameters and bounding-radii overrides.

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[alibuild]

Error while checking build/O2/fullCI_slc9 for f220c7c at 2026-04-11 04:00:

## sw/BUILD/O2-latest/log
ninja: error: dependency cycle: stage/lib64/G__O2GPUDataTypes_rdict.pcm -> stage/lib64/libO2TPCFastTransformation.so -> GPU/TPCFastTransformation/CMakeFiles/O2lib-TPCFastTransformation.dir/SplineSpec.cxx.o -> cmake_object_order_depends_target_O2lib-TPCFastTransformation -> GPU/TPCFastTransformation/G__O2TPCFastTransformation.cxx -> stage/lib64/G__O2GPUDataTypes_rdict.pcm

Full log here.