Global and User-Level Control to Disable Task Update Notification Emails

Description:
The current notification settings only allow each user to manage their own preferences, but there is no way for the admin to disable task update emails for all users system-wide. We would like both global control and user-level control so that task update notifications can be managed consistently.

Suggested Fix:
Add a global toggle in the admin panel to disable “Task Updated” notification emails for all users.
Additionally, add an option in each user’s profile settings allowing them to disable these notifications individually if the global setting is enabled.