Automatic merge from submit-queue (batch tested with PRs 56599, 56824, 56918, 56967, 56959). 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>.
Fix bug in container lifecycle event message generation
**What this PR does / why we need it**:
In HandlerRunner of container lifecycle, the event msg is re-declared. Thus, the event message we returned would always be empty.
**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#56962
**Special notes for your reviewer**:
/sig node
**Release note**:
```release-note
Fix bug in container lifecycle event messaging
```
b97e17603b