test(news): respect sandboxed preview focus and browser isolation

e2e/news-real/news.spec.ts

@@ -51,7 +51,6 @@ test("staff signs in, saves a draft, previews it and publishes to anonymous read
 		baseURL,
 		locale: "en-US",
 		ignoreHTTPSErrors: true,
-		serviceWorkers: "block",
 	});
 	const reader = await anonymous.newPage();
 	const errors: string[] = [];
@@ -199,7 +198,11 @@ test("staff signs in, saves a draft, previews it and publishes to anonymous read
 			expect(
 				await rows("SELECT id FROM website_article_revisions"),
 			).toHaveLength(0);
-			await page.keyboard.press("Escape");
+			// Preview autofocus enters its sandboxed iframe, whose Escape event cannot reach the dialog.
+			await page
+				.getByRole("dialog")
+				.getByRole("button", { name: "Close", exact: true })
+				.click();
 			await expect(page.getByRole("dialog")).toHaveCount(0);
 		});
 		await test.step("publish once and persist revision, audit and delivery intent", async () => {

e2e/news-real/playwright.config.ts

@@ -25,7 +25,6 @@ export default defineConfig({
 		baseURL: process.env.NEWS_E2E_BASE_URL,
 		locale: "en-US",
 		ignoreHTTPSErrors: true,
-		serviceWorkers: "block",
 		trace: "retain-on-failure",
 		screenshot: "only-on-failure",
 		video: "off",