[ci] Temporarily always build from source for codesandbox

[poteto]

Stack from ghstack (oldest at bottom):

• [ci] Override actions/cache default timeout #30512
• [ci] Deprecate yarn publish-prereleases #30510
• [ci] Cleanup more references to circleci #30509
• [ci] Cleanup --ci flag #30508
• [ci] Rename scripts/circleci to scripts/ci #30507
• [ci] Cleanup forked build files #30506
• -> [ci] Temporarily always build from source for codesandbox #30511

We need a GitHub token to download artifacts from GitHub so
unfortunately codesandboxci will need to revert to the slower process
of building from source for now until it's possible to pass secrets to
codesandboxci.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
react-compiler-playground	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 29, 2024 8:01pm

[react-sizebot]

Comparing: ec98d36...1f54ae5

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
oss-stable/react-dom/cjs/react-dom.production.js	=	6.68 kB	6.68 kB	+0.05%	1.82 kB	1.82 kB
oss-stable/react-dom/cjs/react-dom-client.production.js	=	501.46 kB	501.46 kB	=	89.98 kB	89.98 kB
oss-experimental/react-dom/cjs/react-dom.production.js	=	6.69 kB	6.69 kB	=	1.83 kB	1.83 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js	=	506.28 kB	506.28 kB	=	90.68 kB	90.68 kB
facebook-www/ReactDOM-prod.classic.js	=	601.27 kB	601.27 kB	=	106.28 kB	106.28 kB
facebook-www/ReactDOM-prod.modern.js	=	577.38 kB	577.38 kB	=	102.52 kB	102.52 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against e5d79a2