RESTRICT AUTOMERGE

This change is the union of
I2aaab1903dee54190338f7b6e49888aa51437108 and I58834636e092f992e403342e36b475dc60e8f20a

Original CL descriptions:

*** I2aaab1903dee54190338f7b6e49888aa51437108
Block TYPE_PRESENTATION windows on default display

... and any other display that isn't considered a public presentation
display, as per Display.isPublicPresentation()

*** I58834636e092f992e403342e36b475dc60e8f20a
Use TYPE_PRIVATE_PRESENTATION for private presentations

Detect if the Presenation is targeting a private virtual display, and if they
are use the windowType TYPE_PRIVATE_PRESENTATION.
***

Bug: 141745510
Test: atest CtsWindowManagerDeviceTestCases:android.server.wm.PresentationTest CtsDisplayTestCases:android.display.cts.VirtualDisplayTest

Change-Id: I9f1c4b140ab4bc6183151aafc5501e8648fbc3fa
(cherry picked from commit 7faec249)