Analyze vertical swipes on QS's Scroll View.

When media controls are shown, the full qs+media controls often takes
up more than one full screen. Swiping up on this causes the qs to
vertically scroll instead of collapse.

Prior to this cl, we weren't analyzing such swipes in the
FalsingManager. Now we do.

No explicit action is taken in the event of a false swipe. It simply
gives us more signal. Enough bad swipes may implicitly cause the
lock screen to reset itself.

Fixes: 241708312
Test: manual
Change-Id: I5adfb3a22b2f0f51efb87d56a6cfc5459cd67006