Bug 30214: Add ACCTDETAILS notice to self registeration

Bug 30214: Add ACCTDETAILS notice to self registeration

This patch adds the ACCTDETAILS notice trigger to the opac self
registration process. Allowing new users, without varification enabled,
to receive the ACCTDETAILS notice immediately after their account is
created.

Test plan
1) Enable AutoEmailOpacUser system preference
2) Ensure the ACCTDETAILS notice is configured
3) Ensure `PatronSelfRegistrationVerifyByEmail` is disabled
4) Register a new user via the opac self registration process using an
   email address you have access to
5) The new user should have been created and you should be able to see
   the account details notice in their associated notices
6) Confirm that the email address used above has received the notice.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>