Add ability to edit DAST site profiles with new fields

Related #271537 (closed)

What does this MR do?

This adds support to edit newly added fields in DAST Site Profiles.

• Authentication fields (url, username, password, and form fields)
• Exclude urls
• Request headers

This MR tries to resolve some anomalies and make the namings consistent with GraphQL schema 👇

Notes

1. feature flag - This change is behind a feature flag security_dast_site_profiles_additional_fields
2. GraphQL - It follows the schema discussed at #225406 (closed) with backend

Screenshots (strongly suggested)

How to test this

1. Enable the feature flag echo "Feature.enable(:security_dast_site_profiles_additional_fields)" | rails c
2. Edit a site profile