docs(cloudflare): Rework the guide for v11

[JPeer264]

DESCRIBE YOUR PR

closes SDK-1426

Updates the Cloudflare guide for the APIs v11 removes or changes. Hold until
v11 ships; every claim here is wrong on the v10 line.

• Remove the @sentry/cloudflare/nodejs_compat entrypoint, which no longer
  exists, from the guide, the Prisma page, the integrations table and the
  Vercel AI page, and delete its feature page
• Drop the _experimental Vite plugin options for buildTimeInstrumentation
  and autoInstrumentation, both on by default, and remove the experimental
  alert on the plugin page
• Import wrapRequestHandler from @sentry/cloudflare/request, the only
  entry that still exports it
• Delete the removed honoIntegration page
• Describe spans as streamed by default on the MCP pages and in
  troubleshooting, and keep the v10 opt-in as a separate case
• Drop the caveat that configured classes must be declared in the Worker
  entry, fixed by fix(cloudflare): Auto-instrument classes re-exported from the worker entry sentry-javascript#23282

IS YOUR CHANGE URGENT?

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Select exactly one option. For deadlines, replace YYYY-MM-DD with the due date. You can update this information later by editing the PR description.

• Urgent deadline (GA date, etc.): YYYY-MM-DD
• Other deadline: 2026-09-16
• No deadline: Not urgent, can wait up to 1 week+

SLA

• Teamwork makes the dream work, so please add a reviewer to your PRs.
• Please give the docs team up to 1 week to review your PR unless you've supplied a deadline.

Thanks in advance for your help!

PRE-MERGE CHECKLIST

Make sure you've checked the following before merging your changes:

• Checked Vercel preview for correctness, including links
• PR was reviewed and approved by any necessary SMEs (subject matter experts)
• PR was reviewed and approved by a member of the Sentry docs team

LEGAL BOILERPLATE

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

EXTRA RESOURCES

• Sentry Docs contributor guide

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[linear-code]

SDK-1426