chore(e2e): satisfy biome formatting for gateway url

Shortening the default gateway URL to the `ci` product let the expression fit on one line, so biome's formatter wanted it collapsed. Fixes the failing quality check.

Generated-By: PostHog Code
Task-Id: bec748f0-776a-4ab6-a4f0-15109b3740df

Author: joshsny

packages/agent/e2e/config.ts

@@ -13,8 +13,7 @@ export type Adapter = "claude" | "codex";
  */
 // `||` not `??`: CI sets unset vars to "" which should fall back to the default.
 const GATEWAY_URL =
-  process.env.POSTHOG_CODE_E2E_GATEWAY_URL ||
-  "http://localhost:3308/ci";
+  process.env.POSTHOG_CODE_E2E_GATEWAY_URL || "http://localhost:3308/ci";
 const TOKEN = process.env.POSTHOG_CODE_E2E_GATEWAY_PERSONAL_API_KEY ?? "";
 
 // This checkout's bundled codex binaries, relative to packages/agent/e2e.