feat(gatsby): Slices <> partial hydration interop (#36960)

* Add use client directive to slice placeholder

* DRY loader

* Remove either-or condition

* Adjust conditional logic

* Add slice providers to tree

* Do not remove slice dependency blocks from bundle

Co-authored-by: Michal Piechowiak <[email protected]>

* skip indirection when importing static query context

* collect static queries from slices when rendering rsc

Co-authored-by: Michal Piechowiak <[email protected]>

Author: tyhopp