SimCoreTestsMT: Migrate AtlasG4_tf ttbar ART jobs to ComponentAccumulator

This MR only affects ART scripts, so will not alter the CI output.

Tagging @zhubacek

This merge request affects 1 package:

• Simulation/Tests/SimCoreTestsMT

This merge request affects 2 files:

• Simulation/Tests/SimCoreTestsMT/test/test_AtlasG4_TTbarSim_MT.sh
• Simulation/Tests/SimCoreTestsMT/test/test_AtlasG4_TTbarSim_MTvsST.sh

Adding @jchapman as watcher

added Simulation main review-pending-level-1 labels

CI Result SUCCESS (hash 03788470)

	Athena	AthSimulation
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
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 1247]

The changes are straightforward and there are no issues with the CI. Approving from L1.

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

mentioned in commit c1fc3e1a

merged