Markdoc asset bleed, second try

[bholmesdev]

Changes

• Un-reverts [Markdoc] Fix global asset bleed #6758, which introduced issues for Astro component imports and Windows test failures. Fixes:
  • Use manualChunks to split Astro components as separate modules from the markdoc.config.mjs. Vite bundles these in-line by default, which introduced bugs in the previous version
  • Update renderStylesheet calls to use new APIs (this was broken during the merge in the previous version)

Original changes brought back:

• Fix script and style bleed in Markdoc when using Astro component tags. This was introduced by the new markdoc.config.mjs in version 0.1.0.
  • Inject the astroPropagatedAssets on all Astro component imports
  • Handle propagated assets from the Markdoc renderer
• Add a handlePropagation option for content collection integrations. This allows us to toggle asset propagation wrappers on or off by file extension. Ex. MDX needs this wrapper, but Markdown and Markdoc do not.

Testing

• New test that verifies no asset bleeding occurs in dev and prod.

Docs

N/A, bug fix

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[matthewp]

I think the windows failure here might be legitimate. I'm going to test on my Windows computer.