stop using bare ROOT objects in HLTDQMHist* classes [12_5_X]

[missirol]

backport of #40760

PR description:

From the description of #40760:

This PR tries to implement the suggestion in #40676 (comment), to avoid accessing bare ROOT objects (via MonitorElement) in the HLTDQMHist*D classes of the HLT offline DQM.

Minor cleanup is also applied to HLTTagAndProbeOfflineSource<..>::fillDescriptions.

Merely technical. No changes expected.

PR validation:

None beyond the checks done for #40760.

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:

#40760

Backport of a possible fix to address #40676.

[cmsbuild]

A new Pull Request was created by @missirol (Marino Missiroli) for CMSSW_12_5_X.

It involves the following packages:

• DQMOffline/Trigger (dqm)

@emanueleusai, @cmsbuild, @syuvivida, @rvenditti, @micsucmed, @pmandrik can you please review it and eventually sign? Thanks.
@mtosi, @Fedespring, @HuguesBrun, @jhgoh, @trocino, @cericeci, @rociovilar this is something you requested to watch as well.
@perrotta, @dpiparo, @rappoccio you are the release manager for this.

cms-bot commands are listed here

• Backported from stop using bare ROOT objects in HLTDQMHist* classes #40760

[missirol]

type bugfix

[missirol]

please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-97d2f8/30664/summary.html
COMMIT: f545591
CMSSW: CMSSW_12_5_X_2023-02-12-0000/el8_amd64_gcc10
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/40786/30664/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially added 4 lines to the logs
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 51
• DQMHistoTests: Total histograms compared: 3724047
• DQMHistoTests: Total failures: 2
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3724023
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 50 files compared)
• Checked 216 log files, 167 edm output root files, 51 DQM output files
• TriggerResults: no differences found

[emanueleusai]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_12_5_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_13_1_X is complete. This pull request will now be reviewed by the release team before it's merged. @perrotta, @dpiparo, @rappoccio (and backports should be raised in the release meeting by the corresponding L2)

[perrotta]

+1