UPSTREAM: 61193: bugfix(mount): lstat with abs path of parent instead of '/..'

[liggitt]

No description provided.

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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[mfojtik]

/retest

[openshift-ci-robot]

@liggitt: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/openshift-jenkins/gcp	77f8b29	link	/test gcp
ci/openshift-jenkins/extended_conformance_install	77f8b29	link	/test extended_conformance_install

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[sdodson]

flaked on #18963