Adjust SvelteKit wizard to configure the SDK correctly for Cloudflare Pages

[Lms24]

The SvelteKit SDK now natively supports Cloudflare Pages (getsentry/sentry-javascript#14672) since @sentry/sveltekit@9.102.0.

Right now, the wizard doesn't take into account the special setup needed for Cloudflare.

We should eventually add a check for cloudflare config and adjust the setup in hooks.server.ts accordingly. No high prio on this though. For now we just tell people to follow the docs.

TODO: link to updated docs once they're live