Replace the modals with dropdowns in the search widgets in the grade reports

Login as admin. Create a course. Set Group mode = 'Separate groups' Enrol several students in the course and add some of them to the created groups Navigate to the Gradebook (Grades) Go to the User report. Click on the group selector (also test this by pressing enter/space/down arrow using the keyboard) confirm that the selector opens in a dropdown confirm that the immediate focus is on the search input element Try to search for an item user the search input. confirm that only relevant results are displayed confirm that there is a 'clear search' option on the search input element Click on the 'clear search' element confirm that the value in the search input is cleared confirm that all available results are displayed confirm that you cannot see the 'clear search' option While the focus on the search element, press tab using the keyboard confirm that the focus now shifts on the list of results confirm that you can navigate through the items in the list using up/down arrow keys Press Esc confirm that the modal closes and the focus is back on the selector's trigger element. Repeat steps 6-10 with the user selector in the User report and confirm that everything works as expected. Repeat steps 6-10 with the grade selector in the Single view report (Grade > Single view > Grade items) and confirm that everything works as expected. Repeat steps 6-10 with the user selector in the Single view report (Grade > Single view > Users) and confirm that everything works as expected.