MDL-68437 course: ws support to optionally fetch only active users

Modifies the 'core_course_get_enrolled_users_by_cmid' webservice and
the generic js methods that call this webservice and enables defining
whether the ws should only return the active users or all enrolled
users in the course.

course/amd/src/repository.js

@@ -134,14 +134,16 @@ const getLastAccessedCourses = (userid, limit, offset, sort) => {
  *
  * @param {Number} cmid Course Module from which the users will be obtained
  * @param {Number} groupID Group ID from which the users will be obtained
+ * @param {Boolean} onlyActive Whether to fetch only the active enrolled users or all enrolled users in the course.
  * @returns {Promise} Promise containing a list of users
  */
-const getEnrolledUsersFromCourseModuleID = (cmid, groupID) => {
+const getEnrolledUsersFromCourseModuleID = (cmid, groupID, onlyActive = false) => {
     var request = {
         methodname: 'core_course_get_enrolled_users_by_cmid',
         args: {
             cmid: cmid,
             groupid: groupID,
+            onlyactive: onlyActive,
         },
     };