Implement the cascading status filter UI in the left nav settings component.
Implement the cascading status filter UI in the left nav settings component.

Code size diff is a bit large; I will need to work on deferring this component in order to reduce the code size.

PiperOrigin-RevId: 175771037

angulardart/angular_components,angulardart/angular_components,angulardart/angular_components