Merge "MotionEvent docs: Clarify relative axis processing for batched events" into main am: d073eb8384 am: 7a536d39c5

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3237700

Change-Id: I480630da4ccd6573b46962e014b16d34266bffe8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>