What happened?

#119026
https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/3960-pod-lifecycle-sleep-action/README.md
I used example from KEP but after kubectl apply --filename nginx.yaml I got error:
The Pod "lifecycle" is invalid: spec.containers[0].lifecycle.preStop: Required value: must specify a handler type
I tried kubectl edit deployments.apps nginx but I got the same error.

What did you expect to happen?

deployment.apps/nginx created

How can we reproduce it (as minimally and precisely as possible)?

1. install 1.29
2. kubectl apply --filename nginx-sleep.yaml (example from kep)

Anything else we need to know?

No response

Kubernetes version

$ kubectl version
Client Version: v1.29.0
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
Server Version: v1.29.0

Cloud provider

OS version

# On Linux:
$ cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
$ uname -a
Linux k8s-manager-01-green 5.10.0-26-amd64 #1 SMP Debian 5.10.197-1 (2023-09-29) x86_64 GNU/Linux

# On Windows:
C:\> wmic os get Caption, Version, BuildNumber, OSArchitecture
# paste output here

Install tools

Container runtime (CRI) and version (if applicable)

Related plugins (CNI, CSI, ...) and versions (if applicable)