feat(rsc,transforms): rsc css transform for default export identifier

[hi-ogawa]

• closes auto css injection improvement #1044

It's not really sound, but let's just see how far we can get with this:

// input
export default Layout;

// output
export default __vite_rsc_wrap_css__(Layout) // check `typeof Layout === 'function'` internally

[hi-ogawa]

• feat(rsc,transforms): rsc css transform for default export identifier #1046 👈 (View in Graphite)
• fix: ensure server-only and client-only not externalized #1045
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[hi-ogawa]

Merge activity

• Jun 21, 9:10 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• Jun 21, 9:12 AM UTC: Graphite rebased this pull request as part of a merge.
• Jun 21, 9:22 AM UTC: @hi-ogawa merged this pull request with Graphite.