Don't add tabindex of 0 to scoreboard elements if they are not selectable, since it will be confusing for screenreader users to be able to tab to an element that doesn't have keyboard or click handles.
Don't add tabindex of 0 to scoreboard elements if they are not selectable, since it will be confusing for screenreader users to be able to tab to an element that doesn't have keyboard or click handles.

PiperOrigin-RevId: 244043914

angulardart/angular_components,angulardart/angular_components,angulardart/angular_components