Update KeyguardUpdateMonitor DPM_STATE_CHANGED params

KUM#DPM_STATE_CHANGE was sending the userId as message's object obj,
not arg1, so this test would break on headless system variants since
msg.arg1 always was equal to 0 (while this always passes on non-headless
systems since the test always runs as userId 0).

Test: atest KeyguardUpdateMonitorTest#testSecondaryLockscreenRequirement
on a headless system device variant (previously was 100% failing)
Fixes: 264869291

Change-Id: Iab519b59ca92ea25da1386cb2e020df63c828070

packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java

@@ -1824,7 +1824,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener, Dumpab
             } else if (DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED
                     .equals(action)) {
                 mHandler.sendMessage(mHandler.obtainMessage(MSG_DPM_STATE_CHANGED,
-                        getSendingUserId()));
+                        getSendingUserId(), 0));
             } else if (ACTION_USER_UNLOCKED.equals(action)) {
                 mHandler.sendMessage(mHandler.obtainMessage(MSG_USER_UNLOCKED,
                         getSendingUserId(), 0));