next.js

84cdf573 - CI: Enable `experimental.isolatedDevBuild` for `test-unit` (#84559)

CI: Enable `experimental.isolatedDevBuild` for `test-unit` (#84559) Enabling `experimental.isolatedDevBuild` required many changes to the current workflow, so we will incrementally roll out to the tests. 1. ~~test-experimental-dev ([link](https://github.com/vercel/next.js/pull/84099))~~ 2. test-dev ([link](https://github.com/vercel/next.js/pull/84562)) 2. test-prod ([link](https://github.com/vercel/next.js/pull/84556)) 3. test-integration ([link](https://github.com/vercel/next.js/pull/84558)) 4. test-unit (here) 5. Enable by default, remove the flag, and update the rest x-ref: https://github.com/vercel/next.js/pull/84043