Add regression test for #15220

[serathius]

What would you like to be added?

A command like make test-robustness-issue14685 for https://github.com/etcd-io/etcd/issues/15220

Example https://github.com/etcd-io/etcd/pull/18099

How to start:

• Follow https://github.com/etcd-io/etcd/tree/main/tests/robustness
• Try command like make test-robustness-issue14370 to see how it should work

Requirement:

• Add command make test-robustness-issue15220
• The command should pick an old etcd version that is affected (read the issue #15220). Patch might be needed for repro (ask @serathius if needed)
• Running command should reproduce the failure within ~100 runs
• Update https://github.com/etcd-io/etcd/tree/main/tests/robustness#robustness-track-record with the command

Why is this needed?

Ensure we maintain reprodudability of historical issues.

[serathius]

/assign samuelbartels20

[k8s-ci-robot]

@serathius: GitHub didn't allow me to assign the following users: samuelbartels20.

Note that only etcd-io members with read permissions, repo collaborators and people who have commented on this issue/PR can be assigned. Additionally, issues/PRs can only have 10 assignees at the same time. For more information please see the contributor guide

In response to [this](https://github.com/etcd-io/etcd/issues/18926#issuecomment-2489091631): >/assign samuelbartels20 Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.

[samuelbartels20]

@serathius Please assign me to this issue