Send all MotionEvents to InputFilter.

In order to support accessibility on multi-display, MotionEvents
from all display need to be sent to InputFilter.

Bug: 112273690
Test: atest inputflinger_tests libinput_tests
Test: manually test to see if MotionEvents from 2nd display sent
      to A11yInputFilter
Change-Id: If1f4e172a07973f1e56ff3a9d2589712531e334a