fix(vercel): output build directory

[ematipico]

Changes

Closes #430
Closes PLT-2625

My latest PR that unified the adapters had a regression where the output directory couldn't be determined when astro:config:setup was called.

The adapter uses known directories that Vercel uses to deploy the assets. These directories are set when Astro triggers astro:config:setup, and these directories depend on buildOutput. However, in Astro v5 this value isn't the final value inside astro:config:setup.

For this reason, the directories are computed at the end of the build, instead. Based on that, we copy the assets to the correct folder.

Testing

The current tests should still be valid

Docs

N/A

[changeset-bot]

🦋 Changeset detected

Latest commit: 5768ff4

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

This PR includes changesets to release 19 packages

Name	Type
@astrojs/vercel	Patch
@test/astro-vercel-basic	Patch
@test/astro-vercel-image	Patch
@test/vercel-isr	Patch
@test/vercel-max-duration	Patch
@test/vercel-edge-middleware-with-edge-file	Patch
@test/vercel-edge-middleware-without-edge-file	Patch
@test/astro-vercel-no-output	Patch
@test/astro-vercel-prerendered-error-pages	Patch
@test/astro-vercel-redirects-serverless	Patch
@test/astro-vercel-redirects	Patch
@test/vercel-server-islands	Patch
@test/astro-vercel-serverless-prerender	Patch
@test/astro-vercel-serverless-with-dynamic-routes	Patch
@test/astro-vercel-static-assets	Patch
@test/astro-vercel-static	Patch
@test/vercel-streaming	Patch
@test/astro-vercel-with-web-analytics-enabled-output-as-static	Patch
vercel-hosted-astro-project	Patch

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