False positives in container_ooms metric

[vogre]

Hello!

We are observing what looks like a flood of container_ooms on many containers, which on inspection, mostly appear without restarts / OOMs.

This seems to be caused by a single container receiving an OOM which triggers an eviction

eviction_manager.go:367] "Eviction manager: pods ranked for eviction[...list of pods...]" 

which is associated with many logs of

containerd[1320]: "TaskOOM event &TaskOOM{ContainerID:dd7ba888c8eb849fbffeb5da01bb8cf1034264757d3dff5d7d7815d4c4671200,XXX_unrecognized:[],}"
...

Guessing this could be related to containerd/containerd#7102

From https://pkg.go.dev/github.com/containerd/containerd/api/events?utm_source=godoc#TaskOOM it doesn't look like there's a way to distinguish between false and true TaskOOM eventss.