Prevent Search taskbar edu from showing on home screen.

If a user pins the taskbar and immediately swipes to home, this would
show the taskbar edu tooltip on the home screen. This change checks that
taskbar isn't transitioning to home to prevent that scenario.

Fix: 369061563
Test: Reset Search Taskbar edu, pin taskbar, then swipe to home
immediately. Ensure that the edu doesn't show up on home
Flag: EXEMPT bugfix

Change-Id: I9948189df880b3ed318c4952a8f715cf9a7fa708