Fix ART for photons

The cleaning of IsolationSelection broke the ART tests for photons. This MR fixes this. It also improved slightly the egamma CI test to spot this kind of issues earlier

added 22.0 Egamma master labels

added alsoTargeting:22.0 label

hi, just for the record, I think it'll probably be more practical (for MRs aiming both at 22.0 and master) to target the 22.0 branch (and then auto-sweep to master) rather than the contrary. But no need to change now since the pipeline started already, we'll see if the new alsoTargeting:22.0 label does its job properly.

This merge request affects 1 package:

• Reconstruction/egamma/egammaValidation

This merge request affects 4 files:

• Reconstruction/egamma/egammaValidation/share/egamma_art_checker_joboptions.py
• Reconstruction/egamma/egammaValidation/test/test_electron.sh
• Reconstruction/egamma/egammaValidation/test/test_electron_pileup.sh
• Reconstruction/egamma/egammaValidation/test/ut_egammaARTJob_test.sh

Adding @goetz as watcher

added Reconstruction review-pending-level-1 labels

CI Result SUCCESS (hash 78cb9cea)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
externals
cmake
make
required tests
optional 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
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 52965]

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

Changes and CI look fine. Approving.

Kira (L1)

added bugfix urgent labels

merged

mentioned in commit 78bf54b4

added sweep:done label

picked the changes into the branch cherry-pick-78bf54b44f1-22.0 with commit 94fe8f27

mentioned in commit 94fe8f27

Sweep summary
successful:

• 22.0

(see https://aiatlas154.cern.ch/jenkins/job/auto_git_sweeps/2664/console for details)

mentioned in merge request !53679 (merged)

mentioned in commit ee87f5cf