Add Koala identify tracking to pricing form submission

- Add rx.call_script to trigger ko.identify() after successful form validation
- Integrates with existing Koala pixel infrastructure
- Maintains existing pricing form functionality
- Uses same try-catch error handling pattern as newsletter signup
- Ensures form submission flow is never blocked by tracking failures

Co-Authored-By: Alek <[email protected]>

Author: devin-ai-integration[bot]

pcweb/pages/pricing/header.py

@@ -185,6 +185,8 @@ def submit(self, form_data: dict[str, Any]):
             # Send to PostHog for all submissions
             yield QuoteFormState.send_demo_event(form_data)
 
+            yield rx.call_script(f"try {{ ko.identify('{email}'); }} catch(e) {{ console.warn('Koala identify failed:', e); }}")
+            
             yield ThankYouDialogState.push(True)
             yield rx.redirect("/pricing?lead=1")
             return