Automatic merge from submit-queue (batch tested with PRs 54242, 58522, 58704, 58708, 58712). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add better event handling for deleted Pods

**What this PR does / why we need it**:
We have observed cases where scheduler cache has not been updated after Pod deletions. This PR makes the event handling logic more robust by adding logic to check for `cache.DeletedFinalStateUnknown` in our event handler filters.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
Stability: Make Pod delete event handling of scheduler more robust.
```

/sig scheduling