Make email sending optional on a per-contact form basis

The Contact Module was approved for removal in 🌱 [Policy] Move Contact module to contrib Active .

This is Postponed. The status is set according to two policies. The Remove a core extension and move it to a contributed project → and the Extensions approved for removal → policies.

The deprecation work is in 📌 [meta] Tasks to deprecate the Contact module Active and the removal work in 📌 [12.x] [meta] Tasks to remove Contant module Active .

Contact will be moved to a contributed project after the Drupal 12.x branch is open.