Dialog content tab stop for scrollable content #723
Description
Expected Behaviour
The tabindex=0 application to the #content element in sp-dialog is managed to only be present when scrolling is needed. This will reduce unnecessary tab stops.
There should also be design affordance to clarify that the element if focused when scrolling is present.
Actual Behaviour
Currently, tabindex=0 is never applied, but #719 will be adding it 100% of the time to support accessible interactions with this content.