Fix MultiTouchInputMapperTest#Process_TouchpadCapture test failure.

Do not consume raw event because of checking inside surface pass,
if device mode is unscaled. This will prevent the first motion event
to be consumed unexpectedly for touchpad pointer capture mode.

Bug: 162974380
Test: atest MultiTouchInputMapperTest#Process_TouchpadCapture
Change-Id: I3c5b0a4514d67990540967d7fa3d6b48011d3884