Fix Home->Overview not being logged in 0 button mode

At some point we made a change to clearState() from onDragEnd(),
which means the detector is in IDLE state instead of SETTLING. As
long as we aren't still in DRAGGING state, we should log.

Test: wwlogcat
Change-Id: I0f1098bd09cd1296b06f8cb3ebe400c2a25156ca