Automatic merge from submit-queue (batch tested with PRs 46681, 46786, 46264, 46680, 46805)

Add annotation for image policy webhook fail open.

**What this PR does / why we need it**: there's no good way to audit log if binary verification fails open. Adding an annotation can solve that, and provide a useful tool to audit [non-malicious] containers.

**Release note**: add the annotation "alpha.image-policy.k8s.io/failed-open=true" to pods created when the image policy webhook fails open.

```release-note
Add the `alpha.image-policy.k8s.io/failed-open=true` annotation when the image policy webhook encounters an error and fails open.
```