ActsTrackFinding: simplify filling of helper objects

• TrackingSurfaceHelper vector can now be filled element-by-element. This simplifies (and maybe slightly speeds up) its use in CoreStripSpacePointFormationTool, ProtoTrackCreationAndFitAlg, and TrackFindingAlg.
• TrackFindingMeasurements::addDetectorElements() call doesn't need the whole clusterContainer, just the measurement type.
• Remove gatherGeoIds(), moving functionality into TrackFindingMeasurements::addDetectorElements
• Improve MeasurementRangeList API
• Avoid taking reference to temporary object when constructing CkfBranchStopper. This was only used by TrackStatePrinter.
• Rationalise some names in TrackFindingMeasurements: m_measurementOffset → m_measurementOffsets, measurementOffsets() → measurementContainerOffsets(), and measurementOffsetVector() → measurementOffsets().

Tracking/Acts/ActsTrackReconstruction/src/TrackFindingAlg.cxx

@@ -303,7 +303,10 @@ namespace ActsTrk
 
     // @TODO make this condition data
     for (std::size_t icontainer = 0; icontainer < detEleColl.size(); ++icontainer) {
-      measurements.addDetectorElements(measurements.clusterContainerMeasType(*uncalibratedMeasurementContainers[icontainer]), *detEleColl[icontainer], m_ATLASConverterTool);
+      xAOD::UncalibMeasType measType =
+          !uncalibratedMeasurementContainers[icontainer]->empty() ? uncalibratedMeasurementContainers[icontainer]->at(0)->type()
+                                                                  : xAOD::UncalibMeasType::Other;
+      measurements.addDetectorElements(measType, *detEleColl[icontainer], m_ATLASConverterTool);
     }
 
     // NB. must complete all addDetectorElements() before addMeasurements(), so don't combine these loops!