MDL-86043 core: keep SQL consistent with other Moodle versions.

This change resolves issues with Oracle in Moodle 4.5. It has been ported to newer Moodle versions as it improves
the existing SQL and helps maintain consistency across different Moodle versions.

public/lib/classes/task/send_new_user_passwords_task.php

@@ -55,6 +55,7 @@ class send_new_user_passwords_task extends scheduled_task {
             mtrace('Creating passwords for new users...');
             $userfieldsapi = \core_user\fields::for_name();
             $usernamefields = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
+            [$sort, $sortparams] = users_order_by_sql('u');
             $newusers = $DB->get_recordset_sql("SELECT u.id as id, u.email, u.auth, u.deleted,
                                                      u.suspended, u.emailstop, u.mnethostid, u.mailformat,
                                                      $usernamefields, u.username, u.lang,
@@ -66,7 +67,8 @@ class send_new_user_passwords_task extends scheduled_task {
                                                  AND u.email <> ''
                                                  AND u.suspended = 0
                                                  AND u.auth <> 'nologin'
-                                                 AND u.deleted = 0");
+                                                 AND u.deleted = 0
+                                            ORDER BY $sort ASC", $sortparams);
 
             // Note: we can not send emails to suspended accounts.
             foreach ($newusers as $newuser) {