Changes:
- Updated the input validation and added an invalidEmailDomain exit to
the deliver-deal-registration-submission and
deliver-partner-registration-submission actions
- Updated the input validation in the
deliver-whitepaper-download-request and deliver-webinar-access-request
actions
- Added error messages to the forms on the partners page for the added
exits
- Updated the `bannedEmailDomainsForCSRSigning` and
`bannedEmailDomainsForWebsiteSubmissions` config values
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Blocked submissions from restricted email domains with a clear error
response and a prompt to use a work email.
* **Bug Fixes**
* Strengthened email-format and required-field validation across
registration and request forms.
* Restricted partner registration type options to accepted values.
* **Chores**
* Added a domain to the denylist used for website submissions.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Eric
275e21bcda