Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This MR smoothes the UX of the builds page by more effectively affixing the scroll step buttons.
It also ensures the scroll step buttons are always in view, even if the sidemenu is open.
It also moves the autoscroll button into the same container as the scroll buttons.
The build scroll buttons are always in unpredictable places and are often hidden behind sidemenus.
master
Contributes #21832 (closed)
