[13_2_X] Fix sorting index for lost tracks in UnifiedParticleTransformer producer

[stahlleiton]

PR description:

Partial backport of #45689. Since the UParT is not consumed by default in 13_2_X and no models have being trained in this release, I backported the bug fix directly.

@SWuchterl @DickyChant @mandrenguyen

PR validation:

If this PR is a backport please specify the original PR and why you need to backport that PR. If this PR will be backported please specify to which release cycle the backport is meant for:

[cmsbuild]

A new Pull Request was created by @stahlleiton for CMSSW_13_2_X.

It involves the following packages:

• RecoBTag/FeatureTools (reconstruction)

@cmsbuild, @jfernan2, @mandrenguyen can you please review it and eventually sign? Thanks.
@AlexDeMoor, @Ming-Yan, @Senphy, @andrzejnovak, @castaned, @demuller, @hqucms, @missirol this is something you requested to watch as well.
@antoniovilela, @mandrenguyen, @rappoccio, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

• Backported from Fix sorting index for lost tracks in UnifiedParticleTransformer producer #45689

[cmsbuild]

cms-bot internal usage

[mandrenguyen]

backport of #45689

[mandrenguyen]

type bug-fix, btv

[mandrenguyen]

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-3f345c/40915/summary.html
COMMIT: 3e06d24
CMSSW: CMSSW_13_2_X_2024-08-11-0000/el8_amd64_gcc11
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/45700/40915/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially removed 1 lines from the logs
• Reco comparison results: 4 differences found in the comparisons
• DQMHistoTests: Total files compared: 48
• DQMHistoTests: Total histograms compared: 3198830
• DQMHistoTests: Total failures: 0
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3198808
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 47 files compared)
• Checked 207 log files, 159 edm output root files, 48 DQM output files
• TriggerResults: no differences found

[mandrenguyen]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_13_2_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_14_1_X is complete. This pull request will be automatically merged.