Modifying nEventsPerJob to fix production failure [skip modfiles]

Description of bug

During production, for the MC23c/d request, slice s135 is failing. Failure snippet:

Error description: exe, 65: Non-zero return code from generate (65); Logfile error in log.generate: "Pythia8 ERROR Exceeded the max number of consecutive event failures." pilot, 1305: Failed to execute payload:PyJobTransforms.transform.execute 2024-09-21 07:30:29,544 CRITICAL Transform executor raised TransformValidationException: Non-zero return code from generate (65); Logfile error in log.generate: "Pythia8 ERROR Exceeded the max number of consecutive event failures." trans, 65: Non-zero exit code from transform substep executor

Changes introduced

evgenConfig.nEventsPerJob =5000

Tests

For reference, see ATLMCPROD-11394

Issues resolved

Closes #