Add listener to update taskInfo when task change via transition

This change ensures the task information in TopTaskTracker stays updated with any task modifications. For instance, switching a task between freeform windowing and fullscreen will now update in TopTaskTracker, and consequently, in the RecentTasksList used by RecentsModel and RecentsView. This resolves a previous bug where switching a freeform task to fullscreen wasn't reflected, causing the new Fullscreen task and an incorrect DesktopTask state to display in the Overview.

Fix: 356355595
Flag: com.android.window.flags.enable_task_stack_observer_in_shell
Test: Manual.
Change-Id: Ib4a6eb8ea6abd21903018b05186c516511526746