Update default freeform animations for (un)minimize transitions

Cases handled by this CL:
- TRANSIT_OPEN/TRANSIT_TO_FRONT transition + TRANSIT_TO_BACK Change =
    minimize the Task in the Change
- TRANSIT_TO_FRONT transition + TRANSIT_TO_FRONT Change =
    unminimize the Task in the Change

Bug: 349285733
Flag: com.android.window.flags.enable_desktop_windowing_mode
Test: minimize a Desktop app
Test: unminimize a non-hotseat app through alt-tab
Test: unminimize a non-hotseat app through taskbar click

Change-Id: I93816398cc20992f1365fae101a7f77f1bfb0820