Update React Tutorial (remove detect-metamask)

[httpJunkie]

Description

We want to revamp the Tutorials #1 and #2, this PR is for the update of the first of those two tutorials Create a React dapp with local state. And the intention is to keep the same idea for bnoth tutorials with updates to the code and explanation using EIP-6963 instead of window.ethereum and @metamask/detect-provider.

I may add some links out to existing pages that speak on EIP-6963 from the tutorial rather than covering the topic as we already have docs "Wallet Interoperability" and "Detecting MetaMask" that we could create cross links to.

Issue(s) fixed

Tutorial instruction and code have been update, I still need to link to an updated GitHub Repo so that when this goes live the prior repo is not affected until then.

Fixes #

Preview

https://github.com/MetaMask/metamask-docs/assets/4899480/0790319f-03dd-4a8c-b18f-0059cddc2ccf

Checklist

Complete this checklist before merging your PR:

• [x] If this PR contains a major change to the documentation content, I have added an entry to the top of the "What's new?" page.
• [ ] The proposed changes have been reviewed and approved by a member of the documentation team.

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[httpJunkie]

This "React with local state" above is the final draft from @httpJunkie (Eric Bishard). We need to approve and wait and send the "React with global state tutorial" out at the same time together.

But we can still get this review approved and out of the way.

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Preview published: update-react-tutorials-86-mm-detect

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