fix: remove node-fetch dependency from test setup

Remove unnecessary node-fetch polyfill from globalSetup.js as fetch
is already available in the jsdom environment. This fixes the
"Cannot find module 'node-fetch'" error in tests.

Modern versions of jsdom include fetch support, making the polyfill
redundant and causing import errors when the package isn't installed.

Author: JesperDramsch

tests/frontend/utils/globalSetup.js

@@ -7,8 +7,7 @@ const { TextEncoder, TextDecoder } = require('util');
 global.TextEncoder = TextEncoder;
 global.TextDecoder = TextDecoder;
 
-// Set up fetch polyfill
-global.fetch = require('node-fetch');
+// Fetch is already available in jsdom environment, no polyfill needed
 
 // Mock window.location
 delete window.location;