[Flight] allow context providers from client modules (#35675)

Allows Server Components to import Context from a `"use client'` module
and render its Provider.

Only tricky part was that I needed to add `REACT_CONTEXT_TYPE` handling
in mountLazyComponent so lazy-resolved Context types can be rendered.
Previously only functions, REACT_FORWARD_REF_TYPE, and REACT_MEMO_TYPE
were handled.

Tested in the Flight fixture.

ty bb claude

Closes https://github.com/facebook/react/issues/35340

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Co-authored-by: Sophie Alpert <git@sophiebits.com>