Fixes for restoring minimized tasks on reconnect.

Instead of running the onCreateCallback when the desk root appears, run it when the subsequent minimization root appears to allow for immediately adding minimized tasks to new desks.

Additionally, update the repository when tasks are restored.

Bug: 433967620
Test: Manual; restore desks with minimized tasks
Flag: com.android.window.flags.enable_display_reconnect_interaction
Change-Id: Ie32fdf442254520c0e8289ab8544ba422fce3b3a