Update focus on task close on TransitionReady

Expected user journey:
Task0(Focused) on Display0
Task1(Not Focused) on Display1
Close Task0

Current:
Display focus stays in Display0

With this change:
Display focus moves to Display1

Bug: 405297066
Test: DisplayFocusResolverTest
Flag: com.android.window.flags.enable_multi_display_home_focus_bug_fix
Change-Id: Iee1ef1688f260de942111b6ed40ca74ad27faac5