Refactor static build config merge

[bluwy]

Changes

Refactor Vite config merging for static build and remove TODO.

vite.mergeConfig is not used as we want control ordering in some fields, e.g. plugins and rollupOptions

Testing

Should work with pnpm test

Docs

N/A

[changeset-bot]

🦋 Changeset detected

Latest commit: cd679af

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

This PR includes changesets to release 13 packages

Name	Type
astro	Patch
@e2e/astro-component	Patch
@e2e/error-react-spectrum	Patch
@e2e/error-sass	Patch
@e2e/errors	Patch
@e2e/lit-component	Patch
@e2e/preact-component	Patch
@e2e/react-component	Patch
@e2e/solid-component	Patch
@e2e/solid-recurse	Patch
@e2e/svelte-component	Patch
@e2e/e2e-tailwindcss	Patch
@e2e/ts-resolution	Patch

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