next.js

ab09e878 - Reapply "[Breaking] Remove deprecated `publicRuntimeConfig` and `serverRuntimeConfig` (#83944)" (#84167) (#84637)

Reapply "[Breaking] Remove deprecated `publicRuntimeConfig` and `serverRuntimeConfig` (#83944)" (#84167) (#84637) In addition to reapplying #83944, removed added tests and warnings from https://github.com/vercel/next.js/pull/84168