Add DEFAULT_TITLE_DELIMITER back

Author: db-cloudflare

src/components/overrides/Head.astro

@@ -7,6 +7,7 @@ import { getEntry } from "astro:content";
 import { getOgImage } from "~/util/og";
 import type { CollectionEntry } from "astro:content";
 
+const DEFAULT_TITLE_DELIMITER = "|";
 const NOINDEX_PRODUCTS = ["email-security"];
 const CHATBOT_DEPRIORITIZE_PRODUCTS = ["firewall", "style-guide"];