Allow Canvas sub-account admins to launch MyLA in a course

[jennlove-um]

Describe your problem or feature you'd like added

Currently users are required to be enrolled in the Canvas course as a Teacher, TA, or Assistant to launch MyLA in a Canvas course. Sub-account admins can add MyLA to the navigation, but they can't connect MyLA to the course data. When a sub-account admin clicks on MyLA in the course, the UI provides the error message "Something went wrong, please try again later."

The error in the log is [2023-08-23 13:12:24 -0400] [WARNING] [db_util.py:150] Couldn't find user subadmin in enrollment info. Enrollment data has not been populated yet.

Describe the solution you'd like

Allow subaccount admins to add MyLA to courses and see the visualizations in Canvas courses.

Describe any possible alternatives you've considered

Potentially, we could add a configuration in MyLA to allow MyLA admins to determine which roles can add MyLA to Canvas courses.