Modifiers not being set properly in EventConfig for data (backport of #38622, 12_4_X)

[seungjin-yang]

PR description:

This PR is a backport of #38622 This PR introduces the lazy import of Configuration.EventContent.EventContent_cff to avoid calling Modifier.toModify before Process.__init__. The issue is well described in #38622.

PR validation:

Same as #38622.

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:

This PR is a backport of #38622. This fix should be applied to releases for Run2022.

@jshlee @watson-ij

[cmsbuild]

A new Pull Request was created by @seungjin-yang (Seungjin Yang) for CMSSW_12_4_X.

It involves the following packages:

• Configuration/DataProcessing (operations)

@perrotta, @rappoccio, @cmsbuild, @qliphy, @fabiocos, @davidlange6 can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @missirol, @fabiocos this is something you requested to watch as well.
@perrotta, @dpiparo, @qliphy, @rappoccio you are the release manager for this.

cms-bot commands are listed here

• Backported from Modifiers not being set properly in EventConfig for data (GEM RecHits not in latest data) #38622

[qliphy]

please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-bc3a00/26126/summary.html
COMMIT: 1afee18
CMSSW: CMSSW_12_4_X_2022-07-10-2300/el8_amd64_gcc10
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/38677/26126/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: 6 differences found in the comparisons
• DQMHistoTests: Total files compared: 50
• DQMHistoTests: Total histograms compared: 3676076
• DQMHistoTests: Total failures: 13
• DQMHistoTests: Total nulls: 1
• DQMHistoTests: Total successes: 3676040
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.004 KiB( 49 files compared)
• DQMHistoSizes: changed ( 312.0 ): 0.004 KiB MessageLogger/Warnings
• Checked 208 log files, 45 edm output root files, 50 DQM output files
• TriggerResults: no differences found

[perrotta]

backport of #38622

[perrotta]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_12_4_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_12_5_X is complete. This pull request will be automatically merged.