Fix error code on fallback file open error with test, 12_5_X backport

[wddgit]

PR description:

Fix error code returned by cmsRun on a FallbackFileOpenError. There was a bug where it returns FileOpenError in the fallback case.

There is more discussion and more information related to this bug in issue #42040. FYI @stlammel

PR validation:

Includes new unit test. New unit test and existing tests pass. This should only affect the behavior after an exception occurs. It should not affect the output of successful cmsRun processes.

Backport of #42249.

[cmsbuild]

A new Pull Request was created by @wddgit (W. David Dagenhart) for CMSSW_12_5_X.

It involves the following packages:

• IOPool/Input (core)

@cmsbuild, @smuzaffar, @Dr15Jones, @makortel can you please review it and eventually sign? Thanks.
@makortel 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 Fix error code returned by cmsRun on a FallbackFileOpenError #42249

[wddgit]

please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-b33e44/33924/summary.html
COMMIT: d400c68
CMSSW: CMSSW_12_5_X_2023-07-23-0000/el8_amd64_gcc10
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/42384/33924/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: 4 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

[perrotta]

backport of #42249

[makortel]

+core

[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_3_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