Merge pull request #35876 from bennet0496/patch-mail-header

Adding option to set Auto-Submitted email header

diff --cc apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php
index 355d95057ff9276ec5cf959a612a65d416f0c37f,1cabf96489fcf4e6a1e54b8223ba1a3002840c7d..3207268896779f282ace6f6763a670227f8a0e4d
--- 1/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php
--- 2/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php
@@@ -35,10 -35,11 +35,11 @@@ use DateTime
  use OCP\IConfig;
  use OCP\IL10N;
  use OCP\IURLGenerator;
 +use OCP\IUser;
  use OCP\L10N\IFactory as L10NFactory;
+ use OCP\Mail\Headers\AutoSubmitted;
  use OCP\Mail\IEMailTemplate;
  use OCP\Mail\IMailer;
 -use OCP\IUser;
  use Psr\Log\LoggerInterface;
  use Sabre\VObject;
  use Sabre\VObject\Component\VEvent;