Carry the space frame geometry in double

This converts the dimensions, positions and angles of the ALICE space
frame from float to double.

- FrameStructure.cxx was already half converted: lbox, xxtru1..4, trd1par
  and dzFB were double while ptrap, ptrd1, ppgon and tpar were float.
- B045cut subtracts a double-fed TGeoTrd1 from a float-fed TGeoTrap, so a
  single composite shape carried both precisions.
- The float intermediates make algebraically identical surface
  expressions land about 0.1 nm apart, which VecGeom rejects with
  DistanceToOut = -1.
- The near-coincident face pairs in the geometry fall from 2255 in 216
  mothers to 2110 in 200.
- createMaterials() keeps float: MaterialManager::Mixture, Material and
  Medium take Float_t, and initFieldTrackingParams takes float&.
- makeHeatScreen, createWebFrame and createTOFRail are private and called
  only from this file, so their signatures move with it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
(cherry picked from commit 4f954326933e7f58a4a0c48a7cda18ee809e16f4)

Author: sawenzel

Detectors/Passive/include/DetectorsPassive/FrameStructure.h

@@ -53,10 +53,10 @@ class FrameStructure : public PassiveBase
   /**  copy constructor (used in MT mode only)   */
   FrameStructure(const FrameStructure& rhs);
 
-  void makeHeatScreen(const char* name, float dyP, int rot1, int rot2);
-  void createWebFrame(const char* name, float dHz, float theta0, float phi0);
+  void makeHeatScreen(const char* name, double dyP, int rot1, int rot2);
+  void createWebFrame(const char* name, double dHz, double theta0, double phi0);
   void createMaterials();
-  TGeoCompositeShape* createTOFRail(float y);
+  TGeoCompositeShape* createTOFRail(double y);
 
   bool mCaveIsAvailable = false; ///! if the mother volume is available (to hook the frame)