Rework SCT and TGC handling for GX2F derivatives

SCT and TGC cause some branching. This MR pulls the branching together in a lambda and adds some explanation.

This merge request affects 1 package:

• Tracking/TrkFitter/TrkGlobalChi2Fitter

This merge request affects 1 file:

• Tracking/TrkFitter/TrkGlobalChi2Fitter/src/GlobalChi2Fitter.cxx

added Tracking main review-pending-level-1 labels

WARNING: big files (>100K) are found in the changeset

292K in file Tracking/TrkFitter/TrkGlobalChi2Fitter/src/GlobalChi2Fitter.cxx

CI Result FAILURE (hash 623383f4)

	Athena
externals
cmake
make
tests

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added 1 commit

• 5b19e91c - fix cols

Compare with previous version

This merge request affects 1 package:

• Tracking/TrkFitter/TrkGlobalChi2Fitter

This merge request affects 1 file:

• Tracking/TrkFitter/TrkGlobalChi2Fitter/src/GlobalChi2Fitter.cxx

WARNING: big files (>100K) are found in the changeset

292K in file Tracking/TrkFitter/TrkGlobalChi2Fitter/src/GlobalChi2Fitter.cxx

CI Result SUCCESS (hash 5b19e91c)

	Athena
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output (remote access info)

Changes are fine and CI succeeds, approving for L1. -L1

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 5d1a814d