feat: add x.com to list of forbidden host

[Psycojoker]

Twitter's new domain name.

[github-actions[bot]]

Summary:

• The PR introduces a small change, adding a single domain to the list of restricted domains.
• The change is simple and does not affect the overall architecture or logic of the codebase.

Relevant diff:

@@ -31,6 +31,7 @@
     "microsoft.com",
     "openai.com",
     "twitter.com",
+    "x.com",
     "youtube.com",
 ]