Carry the MCH station 1 geometry in double

This converts the dimensions, positions and angles of the muon station 1
quadrant geometry from float to double.

- Station1Geometry.cxx builds its volumes with TGeo directly, whose API
  is double throughout, so the float constants and locals were the only
  narrowing in the chain.
- SQM1 and SQM2 each carried 112 near-coincident face pairs at 38 nm,
  which VecGeom rejects with DistanceToOut = -1.
- The near-coincident face pairs in the geometry fall from 1279 in 156
  mothers to 1045 in 148.
- The eleven TRAP volumes go through TGeoManager::Volume, which has a
  Double_t* overload.
- Materials.cxx keeps float: Material, Mixture and Medium take Float_t,
  and initFieldTrackingParams takes float&.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
(cherry picked from commit dadef7493cd112317234e3dab392547019e90a35)

Author: sawenzel