Introduce kInvalidDenseId for ECAL and HCAL

[fwyzard]

PR description:

Introduce kInvalidDenseId for ECAL and HCAL, and use it instead of 0 or -1.

PR validation:

Technical-only changes, validated running the HLT over 100k events, and obtaining identical results.

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:

Backport of #45238.

[fwyzard]

backport #45239

[fwyzard]

type bugfix

[fwyzard]

type pf

[cmsbuild]

A new Pull Request was created by @fwyzard for CMSSW_14_0_9_patchX.

It involves the following packages:

• RecoParticleFlow/PFRecHitProducer (reconstruction)

@cmsbuild, @jfernan2, @mandrenguyen can you please review it and eventually sign? Thanks.
@hatakeyamak, @lgray, @missirol, @mmarionncern, @seemasharmafnal this is something you requested to watch as well.
@antoniovilela, @rappoccio, @sextonkennedy you are the release manager for this.
Note that this branch is designed for requested bug fixes specific to the CMSSW_14_0_9 release.
If you wish to make a pull request for the CMSSW_14_0_X release cycle, please use the CMSSW_14_0_X branch instead

cms-bot commands are listed here

• Backported from Introduce kInvalidDenseId for ECAL and HCAL [14.0.x] #45239

[cmsbuild]

cms-bot internal usage

[antoniovilela]

+1

[antoniovilela]

merge

[jfernan2]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_14_0_9_patchX IBs after it passes the integration tests.