A rendered tree holds a pending <Suspense> boundary. Buffered rendering
serves only the fallback — with a 200 and no error — so it is refused by
name instead of silently shipping a loading placeholder forever. Streaming
resolution is deferred to a follow-up milestone; the remedy today is to move
the <Suspense> boundary out of the rendered tree.
Usage
import { UnresolvedSuspenseError } from "view-plugin/src/index.ts";