ref(astro): Add Netlify adapter compatibility note (#9130)

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Co-authored-by: vivianyentran <20403606+vivianyentran@users.noreply.github.com>

Author: Lms24

platform-includes/getting-started-primer/javascript.astro.mdx

@@ -19,3 +19,4 @@ Before we get started, make sure you have the following:
 - A Node runtime:
   - This SDK currently only works on Node runtimes (e.g. Node adapter, Vercel with Lambda functions).
     Non-Node runtimes, like Vercel's Edge runtime or Cloudflare Pages, are currently not supported.
+- If you're using Astro's Netflify adapter (`@astrojs/netlify`), you need version `5.0.0` or newer.