desktop-exploded-view: Add aconfig flag

Flag: com.android.launcher3.enable_desktop_exploded_view
Bug: 357861590
Test: Manual
Change-Id: I214899adb90e551b29780cb82e208994a66426bd
diff --git a/aconfig/launcher_overview.aconfig b/aconfig/launcher_overview.aconfig
index 4335f76..93d8d54 100644
--- a/aconfig/launcher_overview.aconfig
+++ b/aconfig/launcher_overview.aconfig
@@ -54,4 +54,11 @@
     namespace: "launcher_overview"
     description: "Makes the desktop windowing task carousel detaches from fullscreen task carousel during quickswitch."
     bug: "353947917"
+}
+
+flag {
+    name: "enable_desktop_exploded_view"
+    namespace: "launcher_overview"
+    description: "Enables the non-overlapping layout for desktop windows in Overview mode."
+    bug: "378011776"
 }
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