Re-add Partytown custom configuration to `Script` component documentation (#68946)
### What?
Add documentation about Partytown configuration on the `Script`
documentation page.
### Why?
The
[`Script`](https://nextjs.org/docs/pages/building-your-application/optimizing/scripts)
component with the `strategy` prop set to `worker` uses
[Partytown](https://partytown.builder.io/) under the hood.
Users may need to customize [Partytown
options](https://partytown.builder.io/configuration) such as `forward`,
`loadScriptsOnMainThread`, and `resolveUrl`, to allow for third party
scripts such as Segment and Google Tag Manager to work properly.
This used to be documented on `docs/basic-features/script.md`, as you
can see on the [pull request that originally introduced the `worker`
strategy](https://github.com/vercel/next.js/pull/34244/files#diff-62dbdb4bc703f7997ea259ad68d8e823d9fafed1e9571155e01c4de21abb6b47R165-R197),
but this doc page was removed (potentially unintendedly) on
https://github.com/vercel/next.js/pull/50701, and there's no longer
mention of Partytown configuration in Next.js docs.
### How?
Adding back the documentation text originally written by
@housseindjirdeh in his pull request
https://github.com/vercel/next.js/pull/34244
Fixes https://github.com/vercel/next.js/issues/68943
---------
Co-authored-by: samcx <sam@vercel.com>