Hide the all apps UI when moving the last task from a display

Previously, moving the final task away from a display after launching it
from the all apps UI unintentionally revealed the all apps UI again.
This occurred because the UI remained active behind the desktop
wallpaper. Removing the last task exposed it.

For other scenarios where the launcher becomes visible, an Intent is
sent to hide the all apps UI. However, this was disabled for
moveToDisplay to prevent the source display from incorrectly gaining
focus instead of the destination.

This change removes that workaround, allowing the launcher to hide the
all apps UI. Additionally, the wct.reorder(/* includingParents= */ true)
call is moved after performDesktopExitCleanupIfNeeded (which sends the
Intent). This ensures the destination display receives focus after the
Intent changes the focus to the source.

Bug: 410463040
Test: DesktopTasksControllerTest
Test: run CD smoke tests
Flag: com.android.window.flags.enable_display_focus_in_shell_transitions
Flag: com.android.window.flags.enable_move_to_next_display_shortcut
Change-Id: I2fa9bb284596cbc5a7b9d3cd8149df42cb37c3f0