Not able to add webpack config in next.config.ts using hydrationoverlay wrapper

Here in this PR - https://github.com/BuilderIO/hydration-overlay/pull/41

While adding a test case for next-app-dir-with-sentry-spotlight
I added a webpack plugin to run spotlight sidecar but it turns out it was not getting added as the next config was wrapped with
```
const {
withHydrationOverlay,
} = require("@builder.io/react-hydration-overlay/next");
```

on removing the wrapper and just exporting the nextconfig the plugins was getting added and worked fine.

Start by reading PR 41 and reproduce the next-app-dir-with-sentry-spotlight test case with the hydration-overlay wrapper in next.config.ts. Trace how the wrapper handles the Next.js webpack configuration; the issue is done when the webpack plugin is retained and runs while the wrapper remains enabled.

Written by the indexing model from the issue text.