fix: backward compatibility Astro <= 4.9

[alexanderniebuhr]

Changes

• port of https://github.com/withastro/astro/pull/11261

Testing

• existing

Docs

• bugfix not needed

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 38ac864c989eb4aa8f8b448948741685264eb5ea

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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