Add (displays) sensitive content concept to the View

Adding a new property/state to track whether the
view displays sensitive content. The property
can be explicitly set by the developer or can be
determined based on fallbacks.

Bug: 322886920
Test: atest android.sensitivecontentprotection.cts.ViewUnitTest
Change-Id: I76aa38c51d907dbfce2d522fdda901867db81ff5