Update useTransition documentation to remove references to timeoutMS

[droidenator]

This PR deletes references to timeoutMS in the documentation about useTransition. For users starting to adopt React 18, it's very confusing that the official documentation still references a deleted config option. Here's the PR that disables timeoutMS: facebook/react#19703

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[github-actions]

Size Changes

📦 Next.js Bundle Analysis

This analysis was generated by the next.js bundle analysis action 🤖

This PR introduced no changes to the javascript bundle 🙌

[harish-sethuraman]

Caution:
This page was about experimental features that aren’t yet available in a stable release. It was aimed at early adopters and people who are curious.
Much of the information on this page is now outdated and exists only for archival purposes. Please refer to the React 18 Alpha announcement post for the up-to-date information.
Before React 18 is released, we will replace this page with stable documentation.

As document suggests the
Much of the information on this page is now outdated and exists only for archival purposes

[droidenator]

@harish-sethuraman I see that but there's literally no other documentation, at least that I've found, on reactjs.org regarding useTransition. As a lot of folks ramp up on this new hook, they're going to be referencing these docs. Since the only real change is removing text about a config that was removed in August 2020, that seems like it's worth updating.

[harish-sethuraman]

There is a link to the react working group in this page -> https://reactjs.org/blog/2021/06/08/the-plan-for-react-18.html where you can find detailed discussions related to react 18 and its release

More about useTransition here -> reactwg/react-18#41