Merge "TouchpadInputMapper: send hover events after UP" into udc-qpr-dev am: 175d715a23

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23970606

Change-Id: I81183c4f0d6976dbefeabb93991d180a8ff4301b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>