fix: set status on error with progressive fallback (#11054)

* fix: set status on error with progressive fallback

* chore: changeset

* fix: obscure statusText in prod

* refactor: use error.name for statusText

---------

Co-authored-by: bholmesdev <bholmesdev@gmail.com>

Author: bholmesdev

.changeset/gorgeous-dancers-return.md

@@ -0,0 +1,5 @@
+---
+"astro": patch
+---
+
+Respect error status when handling Actions with a progressive fallback.

packages/astro/src/actions/runtime/middleware.ts

@@ -47,7 +47,15 @@ export const onRequest = defineMiddleware(async (context, next) => {
 		},
 	};
 	Object.defineProperty(locals, '_actionsInternal', { writable: false, value: actionsInternal });
-	return next();
+	const response = await next();
+	if (result.error) {
+		return new Response(response.body, {
+			status: result.error.status,
+			statusText: result.error.name,
+			headers: response.headers,
+		})
+	}
+	return response;
 });
 
 function nextWithLocalsStub(next: MiddlewareNext, locals: Locals) {