use /bin/kube-scheduler and /bin/controller as the entrypoints of Dockerfiles

[Huang-Wei]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

Revert entrypoints back to /bin/* to make the image backwards-compatible: https://kubernetes.slack.com/archives/C09TP78DV/p1723546975114219.

Will cherrypick this to release-1.29.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Huang-Wei

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[netlify]

✅ Deploy Preview for kubernetes-sigs-scheduler-plugins canceled.

Name	Link
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[ingvagabund]

/lgtm

[Huang-Wei]

/cherrypick release-1.29

[k8s-infra-cherrypick-robot]

@Huang-Wei: new pull request created: #795

In response to this:

/cherrypick release-1.29

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