if we have one of these gestures where we are flicking/momentuming with multiple
touch points, we want to permit this so long as the touch points are moving vaguely
in the same direction, e.g., press -> swipe with 2 fingers
with this, we now cancel these gestures with multi-touch active if we detect motion
with subsequent touch events that doesn't match the vector of the "active" press
for which we are monitoring events
Depends on D11164