FODCircleView: detect touch outside and take action accordingly

FOD's view was intercepting gestures, we need to avoid that.

Test: enable gesture navigation, open a third party-app that asks
for biometric, swipe to recents (or home), ensure FOD doesn't
intercept touch and swipe action reaches a successful ending.
Change-Id: Iaae1a373405735bee5526fd6c05228eddeee5211