Add @NonNull to TextView.setText(@NonNull char[], ...)
This has always thrown a NPE since API 1.
Bug: b/227218386
Test: atest android.widget.TextViewTest
Relnote: "TextView.setText(@NonNull char[], ...) added nullability
annotation."
Change-Id: I212bb5b73d00185f83adb5e74d4acd07a1410ca8