* Add additional scoping for head buffering
* Add test for direct usage of nested component
* Add special scoping for Astro.scopes.render()
* Generate propagation map during the build
* Move to a maybeHead instruction
* Properly serialize for SSR
* More conservative scoping
* Maybe had should honor result._metadata.hasRenderedHead
* Properly type slots
* Allow template result to be passed
* Add changeset
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