Revert "Track hovering pointers explicitly"

Revert "Remove duplicate ACTION_HOVER_MOVE"

Revert submission 20414906-refactor hovering pointers

Reason for revert: Part of DM+Platinum monitor efforts likely Likely causing b/261731836. This won't be submitted if proven otherwise.

Reverted Changes:
I3665d8e68:Remove duplicate ACTION_HOVER_MOVE
I047926e53:Track hovering pointers explicitly

Change-Id: I64b682558071661d79dca953d449251f79ee7004