Update garbage collection

[deepsm007]

Updates garbage collection for orphaned ReleasePayloads to use a coordinated deletion mechanism via remove__ prefixed tags, allowing the pruner to handle tag deletion. Update AlternateImageRepository example to reflect quay.io/openshift/ci as the default destination.

/cc @bradmwilliams

/hold

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: deepsm007
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[openshift-ci]

@deepsm007: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/govulncheck	54e96e9	link	false	/test govulncheck
ci/prow/security	54e96e9	link	false	/test security

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