Add postInclude to reproduce MC16/MC20 EMEC geometry configuration

This can be used to get back the MC16/MC20 performance once we change the default in the C++ to the "Slices" variant.

FYI @mbandier, @tadej

This merge request affects 1 package:

• Simulation/SimulationJobOptions

This merge request affects 1 file:

• Simulation/SimulationJobOptions/share/g4/postInclude.MC16_EMEC_Setup.py

Adding @jchapman as watcher

added Simulation master review-pending-level-1 labels

CI Result SUCCESS (hash 23bdd833)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 41137]

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

mentioned in commit 45e6abb1

merged

added sweep:ignore label