Rename AccessibilityDataPrivate -> AccessibilityDataSensitive

Also adds this as a boolean property for AccessibilityNodeInfo so that
accessibility services can query the property (for nodes visible to the
service) if they want to use it for behavioral changes.

Bug: 268509740
Test: atest AccessibilityNodeInfoTest (frameworks/base and cts)
Test: atest AccessibilityEndToEndTest
Change-Id: I05d30b1e709bde33b0f566210cd2513e3a566962
12 files changed