Update .edu domain validation to catch domains with .edu in middle

- Change from domain.endswith('.edu') to '.edu' in domain
- Now catches domains like 'uncp.edu.pe' where .edu appears in middle
- Tested locally: rejects [email protected], allows [email protected]
- Addresses user feedback for more comprehensive .edu blocking

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

Author: devin-ai-integration[bot]

pcweb/pages/pricing/header.py

@@ -149,7 +149,7 @@ def submit(self, form_data: dict[str, Any]):
         email = form_data.get("email", "").lower()
         if "@" in email:
             domain = email.split("@")[1]
-            if domain in banned_domains or domain.endswith(".edu"):
+            if domain in banned_domains or ".edu" in domain:
                 self.banned_email = True
                 yield rx.set_focus("email")
                 return