Merge "Clean up RECEIVE_UNFOLD_EVENTS_FROM_SYSUI flag" into udc-qpr-dev am: 83e6680e4c am: e8d94d5d25

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24501349

Change-Id: Ia062252ae49b4558cd470795b0fad38cbb6bc80f
Signed-off-by: Automerger Merge Worker <[email protected]>