Backport of cgutil: handle panic from runc helper method into release/1.3.x #16188
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Backport
This PR is auto-generated from #16180 to be assessed for backporting due to the inclusion of the label backport/1.3.x.
The below text is copied from the body of the original PR.
This PR wraps the
cgroups.IsCgroup2UnifiedMode()helper method fromrunc in a
defer/recoverblock because it might panic in some cases.Upstream fix in: opencontainers/runc#3745
Closes #16179
Backports as far back as 1.3.x, when support for cgv2 was added.