Fix the breadcrumbs in the user profile pages in the course context

There seems to be user profile pages in the course context which do not have any breadcrumbs or they need to be fixed. Example:

1. Login as admin
2. Create a course.
3. Go to the course participants page
4. Click on the admin user link in the participants table.
5. In the user profile page (course context) click on 'All logs' (Reports)
6. In the 'All logs' user report page
   • Actual: There are no breadcrumbs
   • Expected: The following breadcrumbs should be displayed: "Admin User / All logs" (where "Admin User" is a link back to the admin's user profile in the course context)
7. Go the user profile page (course context) click on 'Grades' (Reports)
8. In the 'Grades' user report page
   1. Actual: The following breadcrumbs are displayed: "Grades / Grades / User report"
   2. Expected: The following breadcrumbs should be displayed: "Admin User / Grades" (where "Admin User" is a link back to the admin's user profile in the course context)

Additionally, we should remove the "Back" buttons that were introduced in https://tracker.moodle.org/browse/MDL-72287 in these pages as they are no longer required after bringing back the breadcrumbs in the course context.