Trace fold/unfold animation with atrace

This cl adds an always present listener to UnfoldTransitionProgressProvider to log a trace when the animation is running.

Bug: 203391751
Test: Traced with perfetto on top of this change and verified it is present as expected
Change-Id: I560c705795a37315bbdbdca0a1278bf7a2d99a64

quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java

@@ -336,7 +336,8 @@ public abstract class BaseQuickstepLauncher extends Launcher
                             getSystemService(DeviceStateManager.class),
                             getSystemService(SensorManager.class),
                             getMainThreadHandler(),
-                            getMainExecutor()
+                            getMainExecutor(),
+                            /* tracingTagPrefix= */ "launcher"
                     );
 
             mLauncherUnfoldAnimationController = new LauncherUnfoldAnimationController(