Enrol admin, manager and support users as teacher in their requested courses

lib.php

@@ -375,7 +375,7 @@ class course_request_hsh
         }
         // < HsH
         // enrol the requester as teacher if necessary
-        if (!empty($CFG->creatornewroleid) && !is_viewing($context, $user, 'moodle/role:assign') && !is_enrolled($context, $user, 'moodle/role:assign')) {
+        if (!empty($CFG->creatornewroleid) && !isguestuser($user) && !is_enrolled($context, $user, 'moodle/role:assign')) {
             enrol_try_internal_enrol($course->id, $user->id, $CFG->creatornewroleid);
         }