[15_1_X] HI GENs fix for rnd seed issue #48814

[wouf]

PR description:

This is a backport for #48906

[cmsbuild]

A new Pull Request was created by @wouf for CMSSW_15_1_X.

It involves the following packages:

• GeneratorInterface/Hydjet2Interface (generators)
• GeneratorInterface/HydjetInterface (generators)
• GeneratorInterface/PyquenInterface (generators)

@cmsbuild, @lviliani, @mkirsano, @ssen, @theofil can you please review it and eventually sign? Thanks.
@alberto-sanchez, @cbaus, @mkirsano this is something you requested to watch as well.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

• Backported from HI GENs fix for rnd seed issue #48814 #48906

[cmsbuild]

cms-bot internal usage

[mandrenguyen]

backport of #48906

[mandrenguyen]

please test workflow 162

[cmsbuild]

+1

Size: This PR adds an extra 16KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-331b7b/48234/summary.html
COMMIT: 9fb30cb
CMSSW: CMSSW_15_1_X_2025-09-22-1100/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/48958/48234/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially removed 2 lines from the logs
• ROOTFileChecks: Some differences in event products or their sizes found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 51
• DQMHistoTests: Total histograms compared: 4242434
• DQMHistoTests: Total failures: 88413
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 4154001
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 50 files compared)
• Checked 220 log files, 188 edm output root files, 51 DQM output files
• TriggerResults: found differences in 1 / 49 workflows

[mandrenguyen]

+1

[mandrenguyen]

merge