Fix preact compat support for libraries

[bluwy]

Changes

Fix #4093
Fix #4107

• compat: true now noExternal-ize all react entrypoints so Vite can process and alias them to preact compat
• Bump to Vite ^3.0.5 to bring in a fix from fix(ssr): use appendRight for import vitejs/vite#9554

Testing

Added preact-compat-component test fixture to astro/test, and a sub package @test/react-lib to emulate a React library to be using preact/compat instead.

Docs

N/A

[changeset-bot]

🦋 Changeset detected

Latest commit: ed5f91c

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
@astrojs/preact	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/svelte-component	Patch
@e2e/e2e-tailwindcss	Patch
@e2e/ts-resolution	Patch

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[matthewp]

Thanks @bluwy! We do want to continue to pin vite versions for a little while, so no ^.

Also needs a changeset.

[bluwy]

My bad. Added changesets and pinned Vite to 3.0.5

[matthewp]

We're holding off on merging new PRs as 1.0 is coming out. Will approve after that is out and we're ready for merges again.

[matthewp]

Good to merge now, thanks!