Make Activites touch opaque - DO NOT MERGE

Block touches from passing through activities by adding a dedicated
surface that consumes all touches that would otherwise pass through the
bounds availble to the Activity.

+ Keep displayId in sync for ActivityRecord

Bug: 194480991
Test: atest CtsWindowManagerDeviceTestCases:ActivityRecordInputSinkTests
Test: atest CtsWindowManagerDeviceTestCases:CrossAppDragAndDropTests
Test: atest CtsWindowManagerDeviceTestCases:PinnedStackTests
Test: Used "System > Developer Options > Simulate secondary display" to
test that moving activites between displays work as intended.

Change-Id: Ie74674c87c81c571089463349ac6233717ed9f33