privapp-permissions: Add new launcher3 permissions

Ref: https://github.com/LineageOS/android_packages_apps_Trebuchet/commit/cf019f2a7397dd658e9b51e875c53de0a3ccc1dc

Change-Id: If582910de52920a136dce2e2765825fda9e68a02
diff --git a/config/permissions/privapp-permissions-lineage-product.xml b/config/permissions/privapp-permissions-lineage-product.xml
index 1ce093e..d2342f4 100644
--- a/config/permissions/privapp-permissions-lineage-product.xml
+++ b/config/permissions/privapp-permissions-lineage-product.xml
@@ -25,6 +25,10 @@
         <permission name="android.permission.CAPTURE_AUDIO_OUTPUT"/>
     </privapp-permissions>
 
+    <privapp-permissions package="com.android.launcher3">
+        <permission name="android.permission.MANAGE_ACTIVITY_STACKS"/>
+    </privapp-permissions>
+
     <privapp-permissions package="com.google.android.apps.nexuslauncher">
         <permission name="android.permission.BIND_APPWIDGET"/>
         <permission name="android.permission.CONTROL_REMOTE_APP_TRANSITION_ANIMATIONS"/>