[FIX] website_profile: prevent multiple email verifications in portal

[alessandro-caldonazzi]

Problem: Newly created users on the portal can click the 'verify email' button multiple times quickly, leading to the generation of multiple verification emails without refreshing the page.

Steps to Reproduce:

1. Create a new user on the website.
2. Sign in as the new user and navigate to the 'Forum' page.
3. Click the 'verify email' button multiple times quickly.
4. Check Mailhog / Network requests for multiple verification emails.

opw-4122195