[15_0] LHCInfoPerLS endFill conflicting IOVs fix

[JanChyczynski]

Backport of #49269

[cmsbuild]

A new Pull Request was created by @JanChyczynski for CMSSW_15_0_X.

It involves the following packages:

• CondTools/RunInfo (db)

@arunhep, @atpathak, @cmsbuild, @francescobrivio, @perrotta can you please review it and eventually sign? Thanks.
@JanChyczynski, @PonIlya, @mmusich, @rsreds, @yuanchao 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 LHCInfoPerLS endFill conflicting IOVs fix #49269

[cmsbuild]

cms-bot internal usage

[cmsbuild]

Pull request #49271 was updated. @arunhep, @atpathak, @cmsbuild, @francescobrivio, @perrotta can you please check and sign again.

[perrotta]

type bugfix

[perrotta]

please test

[cmsbuild]

+1

Size: This PR adds an extra 16KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-9b365d/49124/summary.html
COMMIT: 310f8d7
CMSSW: CMSSW_15_0_X_2025-10-31-1100/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/49271/49124/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 11 differences found in the comparisons
• DQMHistoTests: Total files compared: 50
• DQMHistoTests: Total histograms compared: 4031982
• DQMHistoTests: Total failures: 39
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 4031923
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 49 files compared)
• Checked 218 log files, 189 edm output root files, 50 DQM output files
• TriggerResults: no differences found

[perrotta]

+db

• Master version merged without issues in CMSSW_16_0_0_pre2

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_15_0_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_16_0_X is complete. This pull request will now be reviewed by the release team before it's merged. @mandrenguyen, @sextonkennedy, @ftenchini (and backports should be raised in the release meeting by the corresponding L2)