Register transitions for Desktop app launch + minimize animations

In other CLs we pass specific RemoteTransitions to Shell for app
launches and unminimize actions. Those CLs cover Launcher actions like
the keyboard alt-tab shortcut, or launching an app from Taskbar.
This CL covers launches that don't originate from Launcher, e.g.
launches through intents.

Test: DesktopAppLaunchTransitionManagerTest
Bug: 369966416
Flag: com.android.window.flags.enable_desktop_app_launch_transitions
Change-Id: I82fd72f870c1e38efe5a8ce533a60f282c10203c