[release-4.21] OCPBUGS-109674: BC/T-BC os-clock-sync-state stuck LOCKED after upstream loss when phc2sys stops disciplining CLOCK_REALTIME (phc2sysOpts: -a -r)

[edcdavid]

This is an automated cherry-pick of #731

/assign edcdavid

Assisted-By: Cursor

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[openshift-ci-robot]

@edcdavid: Jira Issue OCPBUGS-105425 has been cloned as Jira Issue OCPBUGS-109677. Will retitle bug to link to clone.
/retitle [release-4.21] OCPBUGS-109674: BC/T-BC os-clock-sync-state stuck LOCKED after upstream loss when phc2sys stops disciplining CLOCK_REALTIME (phc2sysOpts: -a -r)

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In response to this:

This is an automated cherry-pick of #731

/assign edcdavid

Assisted-By: Cursor

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[nocturnalastro]

/lgtm

[edcdavid]

/verified later @hhassid

[openshift-ci-robot]

@edcdavid: This PR has been marked to be verified later by @hhassid.

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/verified later @hhassid

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[edcdavid]

/label backport-risk-assessed