fix: backward compatibility Astro <= 4.9

[alexanderniebuhr]

Changes

• port of Fix backwards compat with Astro <= 4.9 in Node and Vercel adapters astro#11261

Testing

• existing

Docs

• bugfix not needed

[changeset-bot]

🦋 Changeset detected

Latest commit: 38ac864

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 12 packages

Name	Type
@astrojs/cloudflare	Patch
@astrojs/netlify	Patch
@test/astro-cloudflare-astro-dev-platform	Patch
@test/astro-cloudflare-astro-env	Patch
@test/astro-cloudflare-external-image-service	Patch
@test/astro-cloudflare-wasm	Patch
@test/astro-cloudflare-no-output	Patch
@test/astro-cloudflare-prerender-optimizations	Patch
@test/astro-cloudflare-routes-json	Patch
@test/astro-cloudflare-with-solid-js	Patch
@test/astro-cloudflare-wrangler-preview-platform	Patch
@test/netlify-hosted-astro-project	Patch

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