Description of problem:
In Wayland, it is not possible to reach the list of available screen resolutions via keyboard in Gnome Control Center. In X.org, user can:
1. reach the Resolution line using Tab;
2. open the resolutions list via Return (or Enter) - the first item is selected;
3. select the desired resolution with arrow keys or Tab/Shift+Tab.
In Wayland you can reach the Resolution line using Tab and open the list via Return/Enter. The list is opened, but no item is selected. When pressing:
- down arrow key, the list is closed and the Orientation line is selected;
- up arrow key, the list is closed and the Night Light line is selected;
- Tab key, the list is closed and nothing is selected.

Version-Release number of selected component (if applicable):
mutter-3.32.2-54.el8.x86_64
gnome-control-center-3.28.2-26.el8.x86_64
libwayland-server-1.17.0-1.el8.x86_64

How reproducible:
Always.

Steps to Reproduce:
1. Login to Gnome on Wayland.
2. Run "gnome-control-center display".
3. Press the Tab key 3 times (to select the Resolution line).
4. Press Return (or Enter).
5. Press the down arrow key.

Actual results:
Resolutions list is closed and Orientation line is selected.

Expected results:
Resolutions list should stay open and its second item should be selected.

Additional info:
- This affects users of screen readers (e.g. blind users) and test automation using at-spi.
- There is a workaround: After the resolutions list is opened (step 4), press Alt+Tab (once if no other window is opened, twice if there is one).