This fixes a problem of 3-button variant of pinned taskbar. The code for updating the alignment (taskbar to hotseat) animation clashes with LayoutTransition, leading to weird icon states. This change coordinates these two animation systems.
Fix: 409442851
Test: ABTD cherrypick to Q2 release candidate (manual)
Flag: com.android.window.flags.enable_taskbar_recents_layout_transition
Change-Id: Ifa80c384500a9cd3e65090ee39487977a2ac3b5d