ThePeg: Patch it to avoid space between quotes and suffix is deprecated in c+23 warnings

[smuzaffar]

This PR proposes to patch thepeg to avoid warnings like

  include/ThePEG/Config/Unitsystem.h:163:29: warning: space between quotes and suffix is deprecated in C++23 [-Wdeprecated-literal-operator]
   163 | constexpr Length operator "" _mm( long double x ) {
      |                             ^~
      |                             --
  include/ThePEG/Config/Unitsystem.h:163:29: warning: space between quotes and suffix is deprecated in C++23 [-Wdeprecated-literal-operator]
   163 | constexpr Length operator "" _mm( long double x ) {

[smuzaffar]

please test

[cmsbuild]

A new Pull Request was created by @smuzaffar for branch IB/CMSSW_16_1_X/g14.

@akritkbehera, @iarspider, @raoatifshad, @smuzaffar can you please review it and eventually sign? Thanks.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.
cms-bot commands are listed here

[cmsbuild]

cms-bot internal usage

[smuzaffar]

please test for el8_amd64_gcc14

[smuzaffar]

+externals

good to go in gcc14 , gcc15 and CPP23 IBs where we get these build warnings

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next IB/CMSSW_16_1_X/g14 IBs after it passes the integration tests. This pull request will now be reviewed by the release team before it's merged. @ftenchini, @sextonkennedy, @mandrenguyen (and backports should be raised in the release meeting by the corresponding L2)

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-bb4d30/51139/summary.html
COMMIT: 0a50dec
CMSSW: CMSSW_16_1_X_2026-02-05-1100/el8_amd64_gcc14
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmsdist/10328/51139/install.sh to create a dev area with all the needed externals and cmssw changes.

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:

• @cms-sw SCRAM: proint an error message if there is invalid file/directory in src tree #10321

You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-bb4d30/51139/git-recent-commits.json
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-bb4d30/51139/git-merge-result

Comparison Summary

Summary:

• You potentially added 245 lines to the logs
• Reco comparison results: 97564 differences found in the comparisons
• DQMHistoTests: Total files compared: 52
• DQMHistoTests: Total histograms compared: 4029600
• DQMHistoTests: Total failures: 463132
• DQMHistoTests: Total nulls: 242
• DQMHistoTests: Total successes: 3566206
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: -5.801 KiB( 51 files compared)
• DQMHistoSizes: changed ( 13034.0 ): 0.176 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 17034.0,... ): -0.399 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 2024.0000001 ): -0.039 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 2024.0010001,... ): 0.004 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 2024.0030001 ): 0.027 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 2024.0040001 ): 0.020 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 2024.0060001,... ): 0.008 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 2025.0010001 ): 0.023 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 250202.181 ): 0.293 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 25202.0 ): -0.308 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 7.3 ): ...
• Checked 222 log files, 193 edm output root files, 52 DQM output files
• TriggerResults: found differences in 18 / 50 workflows