help-beta: Remove header from Zulip note.

We don't want to have a title of note and the ⓘ  icon in the note aside.
The only way to do this is to have our custom component called
ZulipNote.

eslint.config.js

@@ -305,4 +305,10 @@ export default tseslint.config(
         },
     },
     ...astroConfigs.recommended,
+    {
+        files: ["help-beta/src/components/ZulipNote.astro"],
+        rules: {
+            "import/unambiguous": "off",
+        },
+    },
 );