fix(studio): render complete interactive gallery previews

packages/design-studio/test/server.test.ts

@@ -168,7 +168,7 @@ test("catalog previews cover all 104 component defaults and unknown routes do no
     });
     const { url } = await result.json();
     const html = await (await send(url)).text();
-    count += (html.match(/data-wrn-component=/g) ?? []).length;
+    count += (html.match(/<section class="sample" data-gallery-component=/g) ?? []).length;
   }
   expect(count).toBe(104);
   expect((await send("/../../package.json")).status).toBe(404);