Fix some issues with the last used entry

Delay a few operations until after the async phase which rely on display
info being retrieved for resolve targets until after they are available.

Also fix a smaller bug where the list header may be appended multiple
times on activity recreation. Wanted to submit this while writing unit
tests still in progress since there's an open P1 on this for dogfood.

bug: 34103288, 34128854, 34127768
Test: Manual testing - writing unit tests in progress.
Change-Id: I47f747a7493f47863a0107cd8054901bab494462