e2e: Disable flaky Twitter embed test

[anomiex]

Proposed Changes

Disable Twitter embed test.

Why are these changes being made?

This has been increasingly flaky, Twitter's oembed API has been returning 404s for this tweet that definitely exists.

Testing Instructions

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-124151

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-124151&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-124151&env=a8c-for-agencies

[tbradsha]

Thank you! I was going to poke at this to see if a retry would work, but disabling it altogether at this point is better.

Related issue: #96010

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.

[anomiex]

I tried a retry, but it seems it's flaky enough that it just kept failing.