blankScreenHint property
Replaces the lazy-list guess when the screen carries no text at all.
The lazy-list sentence is the right guess for a mature suite and the wrong one for a first run, where nothing has rendered and no amount of scrolling will help. Flavored per host because the cause is: a scenario under fake time is usually waiting on something FakeAsync will not complete, while a live app is usually just still drawing.
Implementation
final String blankScreenHint;