GeneratorObjects: Update test for changes in event index handling.

Fixes test failures in the debug build.

This merge request affects 1 package:

• Generators/GeneratorObjects

This merge request affects 1 file:

• Generators/GeneratorObjects/test/HepMcParticleLink_test.cxx

added Generators main review-pending-level-1 labels

CI Result SUCCESS (hash 99a163e0)

	Athena	AthSimulation	AthGeneration	AthAnalysis
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
AthGeneration: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 6826] (remote access info)

Code changes look good and CI succeeds, approving for L1.

removed review-pending-level-1 label

added review-approved label

merged

mentioned in commit b2ac9812