Add ACT_AS_PACKAGE_FOR_ACCESSIBILITY to CTS test

Permission was introduced in topic CL.

Bug: 152839254
Test: atest PermissionPolicyTest
Change-Id: If66fb4bb9fd465d54ffa4904c51e1eef5a400327
diff --git a/tests/tests/permission2/res/raw/android_manifest.xml b/tests/tests/permission2/res/raw/android_manifest.xml
index 6e500e2..abc63a5 100644
--- a/tests/tests/permission2/res/raw/android_manifest.xml
+++ b/tests/tests/permission2/res/raw/android_manifest.xml
@@ -3185,6 +3185,11 @@
     <permission android:name="android.permission.MODIFY_ACCESSIBILITY_DATA"
                 android:protectionLevel="signature" />
 
+    <!-- @hide Allows an application to perform accessibility operations (e.g. send events) on
+         behalf of another package. -->
+    <permission android:name="android.permission.ACT_AS_PACKAGE_FOR_ACCESSIBILITY"
+                android:protectionLevel="signature" />
+
     <!-- @hide Allows an application to change the accessibility volume. -->
     <permission android:name="android.permission.CHANGE_ACCESSIBILITY_VOLUME"
                 android:protectionLevel="signature" />