tool_uploadcourse should check if enrolment method can be disabled/deleted

Update existing courses Login as admin Create a new course with shortname "C1" Navigate to course participants From the Actions menu click on Enrolment methods Delete the Manual enrolments method Enable the Guest access method (click the eye icon) Navigate to Courses > Upload courses in site administration Upload MDL-48391-update-course.csv Set Upload mode to Only update existing courses Set Update mode to Update with CSV data only Press Preview Press Upload courses Navigate back to your course enrolment methods Confirm the Manual enrolment method has been created Confirm the Self enrolment method has been deleted Confirm the Guest access enrolment method has been disabled Create new courses Navigate to Courses > Upload courses in site administration Upload MDL-48391-create-course.csv Set Upload mode to Create new courses, skip existing ones Press Preview Press Upload courses Navigate to the new "Course Two" course Navigate to course participants From the Actions menu click on Enrolment methods Confirm the Manual enrolment method has been disabled Confirm the Guest access enrolment method has been deleted Edit the Self enrolment method Confirm Default assigned role is "Teacher" Confirm Start date is 1 "1 July 2023" Update existing courses without permission Login as admin Create a new user A Navigate to Users > Permissions > Assign system roles in site administration Assign user A the manager role Navigate to Users > Permissions > Define roles in site administration Click on Manager Press Edit At the bottom, filter by  moodle/site:config Allow the permission Now filter by enrol/guest:config Disallow the permission and save Login as user A Repeat steps 7-11 of the Update existing courses scenario Confirm the Status column of the Upload courses preview table display a message like "Cannot disable enrolment method 'Guest access'".