Makes acknowledgeNewUserDisclaimer() a @TestApi

It's already a @SystemApi, but it's used by CTS so it needs to be
allowlisted as @TestApi, otherwise the test fails with a
NoSuchMethodException.

Test: atest com.android.cts.devicepolicy.DeviceOwnerTest#testCreateAndManageUser_newUserDisclaimer
Test: m update-api

Bug: 217753260

Change-Id: Ied5d86a5c067d57a4ae9bbc4d753481879d2e89e
diff --git a/core/api/test-current.txt b/core/api/test-current.txt
index ff4ec31..960fee8 100644
--- a/core/api/test-current.txt
+++ b/core/api/test-current.txt
@@ -483,6 +483,7 @@
 package android.app.admin {
 
   public class DevicePolicyManager {
+    method @RequiresPermission(anyOf={android.Manifest.permission.MANAGE_USERS, android.Manifest.permission.INTERACT_ACROSS_USERS}) public void acknowledgeNewUserDisclaimer();
     method @RequiresPermission(android.Manifest.permission.MANAGE_PROFILE_AND_DEVICE_OWNERS) public void clearOrganizationId();
     method @RequiresPermission(android.Manifest.permission.CLEAR_FREEZE_PERIOD) public void clearSystemUpdatePolicyFreezePeriodRecord();
     method @RequiresPermission(android.Manifest.permission.FORCE_DEVICE_POLICY_MANAGER_LOGS) public long forceNetworkLogs();
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index e52ae51..6cb64b1 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -3703,8 +3703,9 @@
      */
     @RequiresPermission(anyOf = {android.Manifest.permission.MANAGE_USERS,
             android.Manifest.permission.INTERACT_ACROSS_USERS})
-    @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
     @UserHandleAware
+    @TestApi
+    @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
     public void acknowledgeNewUserDisclaimer() {
         if (mService != null) {
             try {
@@ -10330,6 +10331,7 @@
             throw re.rethrowFromSystemServer();
         }
     }
+
     /**
      * Gets the user a {@link #logoutUser(ComponentName)} call would switch to,
      * or {@code null} if the current user is not in a session (i.e., if it was not