Allow haptics to play when fastscrolling private space apps.

LinearSmoothScrolling only happens when there is a new section to scroll to. Instead of playing haptics
when sectionInfo changes, only play haptics during smooth scrolling.

bug: 359658099
Test: Manually tested, video wouldn't help since I am testing haptics
Flag: NONE bugfix
Change-Id: I96c911b4d2d201d0d953a9619a97979759a02427