Fix use of dynamic imports / Astro.glob with Deno Deploy

[matthewp]

Changes

• For Deno, uses esbuild to ensure that dynamic imports are included in the single entry.mjs entrypoint. This is because Deno Deploy does not support --allow-read and needs a single file.
• This is the same technique that SvelteKit uses for its Cloudflare adapter (same constraint). See https://github.com/sveltejs/kit/blob/c9ce3a36445792e281b43e68f904ad9740873d32/packages/adapter-cloudflare/index.js#L47
• This partially fixes 🐛 BUG: deploying to netlify edge functions results in error #3420, for Deno Deploy, but not yet for Netlify Edge Functions (separate PR for that).

Testing

• Most of the time on this issue was spent getting a test built. Created a new test specifically for this which uses a subcommand to run the test without --allow-read. Some of the other tests do depend on that feature, which is why they aren't all run together.

Docs

N/A, bug fix.

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🦋 Changeset detected

Latest commit: 3e97151

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

This PR includes changesets to release 1 package

Name	Type
@astrojs/deno	Patch

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[tony-sull]

Definitely a tricky one to fix since it's so specific to Deno Deploy, great fix!