PhotonVertexSelection: fix unit test

Fix the unit test. Replace the usage of the obscure AthenaStopperAlg with the builtin feature of AppMgr. Also make the test actually run on some events instead of just setting up the job.

cc @akraszna @tadej who have both fiddled with this unit test in previous MRs: !36719 (merged) !39471 (merged)

This merge request affects 1 package:

• PhysicsAnalysis/ElectronPhotonID/PhotonVertexSelection

This merge request affects 2 files:

• PhysicsAnalysis/ElectronPhotonID/PhotonVertexSelection/CMakeLists.txt
• PhysicsAnalysis/ElectronPhotonID/PhotonVertexSelection/test/testPhotonVertexSelection.py

added Analysis Egamma analysis-review-required master review-pending-level-1 labels

CI Result SUCCESS (hash e7e0f89b)

	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 32757]

Changes look fine, tests pass. Approving. -Mike (L1)

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

mentioned in commit f0945f1f

merged

added sweep:ignore label