fix(ci): guard browser context cleanup and export news e2e env before build

e2e/news-real/news.spec.ts

@@ -295,7 +295,7 @@ test("staff signs in, saves a draft, previews it and publishes to anonymous read
 				body: JSON.stringify(errors, null, 2),
 				contentType: "application/json",
 			});
-		await anonymous.close();
+		await anonymous.close().catch(() => {});
 		await database.end();
 		redis.disconnect();
 	}