Adding publicAlternatives to UnsupportedAppUsage on Choreographer

Adding back the UnsupportedAppUsage annotation together with
publicAlternatives according to
https://googleplex-android-review.git.corp.google.com/c/platform/frameworks/base/+/12517216/11/core/java/android/view/DisplayEventReceiver.java#158

Test: build
Bug: 162890382
Bug: 162888881
Bug: 162890407
Change-Id: I7b895978ec61290c5320ccb2472b0bf1addc914b