Automatic merge from submit-queue

Ignore mirror pods with RestartPolicy == Never in restart tests

Kubelet does not sync the mirror pods once they have terminated. If, for some
reason, that such mirror pods get deleted once they have terminated (either by
the node controller or by users), kubelet will not attempt to recreate them.
However, when kubelet restarts, it will examine the static pods, sync once,
and create a mirror pod. This has led to unexpected pod counts in disruptive
tests where kubelet gets restarted on purpose (see #34003).

This change disregard such mirror pods when totaling the pods to fix the test
flake until we have time to implement a long-term solution.

This PR addresses #34003