Add a feature flag to toggle DW carousel detach

Fix: 376015547
Flag: com.android.launcher3.enable_desktop_windowing_carousel_detach
Test: manual
Change-Id: I98d4fbb17e8e432c94842c38d83735533d5ea197
diff --git a/aconfig/launcher_overview.aconfig b/aconfig/launcher_overview.aconfig
index c59978f..4335f76 100644
--- a/aconfig/launcher_overview.aconfig
+++ b/aconfig/launcher_overview.aconfig
@@ -47,4 +47,11 @@
     metadata {
       purpose: PURPOSE_BUGFIX
     }
+}
+
+flag {
+    name: "enable_desktop_windowing_carousel_detach"
+    namespace: "launcher_overview"
+    description: "Makes the desktop windowing task carousel detaches from fullscreen task carousel during quickswitch."
+    bug: "353947917"
 }
\ No newline at end of file
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java b/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
index e87ac2f..ca388c6 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
@@ -15,6 +15,7 @@
  */
 package com.android.launcher3.uioverrides.states;
 
+import static com.android.launcher3.Flags.enableDesktopWindowingCarouselDetach;
 import static com.android.launcher3.Flags.enableScalingRevealHomeAnimation;
 import static com.android.launcher3.logging.StatsLogManager.LAUNCHER_STATE_BACKGROUND;
 
@@ -91,7 +92,7 @@
 
     @Override
     public boolean detachDesktopCarousel() {
-        return true;
+        return enableDesktopWindowingCarouselDetach();
     }
 
     @Override
diff --git a/quickstep/src/com/android/quickstep/fallback/RecentsState.java b/quickstep/src/com/android/quickstep/fallback/RecentsState.java
index 082b96c..34783c7 100644
--- a/quickstep/src/com/android/quickstep/fallback/RecentsState.java
+++ b/quickstep/src/com/android/quickstep/fallback/RecentsState.java
@@ -15,6 +15,7 @@
  */
 package com.android.quickstep.fallback;
 
+import static com.android.launcher3.Flags.enableDesktopWindowingCarouselDetach;
 import static com.android.launcher3.LauncherState.FLAG_CLOSE_POPUPS;
 import static com.android.launcher3.uioverrides.states.BackgroundAppState.getOverviewScaleAndOffsetForBackgroundState;
 import static com.android.launcher3.uioverrides.states.OverviewModalTaskState.getOverviewScaleAndOffsetForModalState;
@@ -152,7 +153,7 @@
 
     @Override
     public boolean detachDesktopCarousel() {
-        return hasFlag(FLAG_DETACH_DESKTOP_CAROUSEL);
+        return hasFlag(FLAG_DETACH_DESKTOP_CAROUSEL) && enableDesktopWindowingCarouselDetach();
     }
 
     /**