Use android.permission.CHANGE_OVERLAY_PACKAGES in DocumentsUI

DocumentsUI run-time calling OverlayManager.setEnabled()
The API was restrict by enforceChangeOverlayPackagesPermission()
Ensure privapp-permissions CHANGE_OVERLAY_PACKAGES added in whitelist

Bug: 128689309
Bug: 131331107
Bug: 132671058
Bug: 132759377
Bug: 132783782

Test: make sargo-userdebug
Test: make marlin-userdebug
Test: make aosp_x86_64-eng
Test: atest DocumentsUIGoogleTests
Test: manual flash ROM and launch DocumentsUI
Change-Id: If1c97a68ea53b6eb65b7b0bee016745f5b951a58