Fix taskbar icon flicker and jump when transforming to hotseat

- Apply additional translation on TaskbarView to account for difference between taskbar icon to bottom spacing compared to hotseat icon to bottom spacing
- Call updateIconAlignment outside of synchronizeNextDraw's then block, which get run after the synchronization

Bug: 204850744
Test: manual
Change-Id: Id65842f506eb342105082649446eb694cd5c33a4
(cherry picked from commit 51da2198)
Merged-In: Id65842f506eb342105082649446eb694cd5c33a4