How can I delete a single localized variant from a collection?

[mattiaz9]

I have a case where some posts might not be localized and should be shown only in the default language.
If I never publish a localized version in other locales it works fine because it fallbacks to the default language, but it looks like it's not possible to unpublish or delete a localized version after publishing.

I tried with a custom endpoint but it deletes everything:

import type { Endpoint } from "payload"

export const deleteLocale: Endpoint = {
  method: "post",
  path: "/delete-locale/:collection/:id/:locale",
  handler: async (req) => {
    if (!req.user) {
      return new Response("Unauthorized", { status: 401 })
    }
    if (
      !req.user.policies.some((policy) => policy === "administrator" || policy === "postsEditor")
    ) {
      return new Response("Forbidden", { status: 403 })
    }

    const { collection, id, locale } = req.routeParams ?? {}
    const payload = req.payload

    await payload.delete({
      id,
      collection: `${collection}_locales`,
      locale,
    })

    return new Response("Ok", { status: 200 })
  },
}

How can I delete just one localized version without deleting everything?