feat(v4): Update the help center portal design (#10296)

Co-authored-by: Pranav <pranavrajs@gmail.com>

app/javascript/dashboard/helper/specs/URLHelper.spec.js

@@ -6,6 +6,7 @@ import {
   getArticleSearchURL,
   hasValidAvatarUrl,
   timeStampAppendedURL,
+  getHostNameFromURL,
 } from '../URLHelper';
 
 describe('#URL Helpers', () => {
@@ -238,4 +239,28 @@ describe('#URL Helpers', () => {
       expect(() => timeStampAppendedURL(input)).toThrow();
     });
   });
+
+  describe('getHostNameFromURL', () => {
+    it('should return the hostname from a valid URL', () => {
+      expect(getHostNameFromURL('https://example.com/path')).toBe(
+        'example.com'
+      );
+    });
+
+    it('should return null for an invalid URL', () => {
+      expect(getHostNameFromURL('not a valid url')).toBe(null);
+    });
+
+    it('should return null for an empty string', () => {
+      expect(getHostNameFromURL('')).toBe(null);
+    });
+
+    it('should return null for undefined input', () => {
+      expect(getHostNameFromURL(undefined)).toBe(null);
+    });
+
+    it('should correctly handle URLs with non-standard TLDs', () => {
+      expect(getHostNameFromURL('https://chatwoot.help')).toBe('chatwoot.help');
+    });
+  });
 });