Merge "Remove new task flag when launching unicorn enrollment." into sc-dev am: afe9dad1 am: 6241cf6b am: 204cf462 am: 58842f6e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15521773

Change-Id: I24056bfc4c59fc6cdfd914c243d223a32792bcfa