test(e2e): Move react-router-8-cloudflare MySQL tests into react-router-8-framework

The Cloudflare variant of react-router-8-framework now covers what the
separate react-router-8-cloudflare app tested, so the MySQL route and tests
move over and the old app is removed. The tests now also run on Node, Bun
and Deno. The Worker is wrapped by `sentryCloudflareVitePlugin` instead of a
manual `withSentry` call.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: JPeer264