validate guestbook email field

[stevenwinship]

What this PR does / why we need it: Guestbook email field is not validated.

Which issue(s) this PR closes: #10661

• Closes Guestbook email field does not check email validity #10661

Special notes for your reviewer:

Suggestions on how to test this: Test existing code and new code entering empty. valid, and invalid email addresses.

Does this PR introduce a user interface change? If mockups are available, please link/include them here:

Is there a release notes update needed for this change?:

Additional documentation:

[pdurbin]

I didn't test this but it looks right.

I don't believe it's possible to fill in a guestbook via API so it's understandable that there is no API test.

Once API tests show as passing I'll move it to "ready for QA".

[stevenwinship]

Moving back to in progress. There is an issue caused by this fix that does affect an API

Caused by: jakarta.validation.ConstraintViolationException: One or more Bean Validation constraints were violated while executing Automatic Bean Validation on callback event: prePersist for class: edu.harvard.iq.dataverse.GuestbookResponse. Please refer to the embedded constraint violations for details.

[github-actions]

📦 Pushed preview images as

ghcr.io/gdcc/dataverse:10661-guestbook-email-field-not-validated

ghcr.io/gdcc/configbaker:10661-guestbook-email-field-not-validated

🚢 See on GHCR. Use by referencing with full name as printed above, mind the registry name.

[pdurbin]

I didn't test this but the changes and updated changes look good and API tests are passing: https://jenkins.dataverse.org/job/IQSS-Dataverse-Develop-PR/job/PR-11022/6/testReport/

Approved!

[ofahimIQSS]

Testing passed - Merging PR
Testing of 10661.docx