Relax isUserRunning() when asking about self.

When a caller is asking about locked state of themselves, don't
require the INTERACT_ACROSS_USERS permission.

Bug: 26178790
Change-Id: I0f02ebfed87b2e1cddc1cb044a9f04272f85483b

services/core/java/com/android/server/am/ActivityManagerService.java

@@ -20453,8 +20453,8 @@ public final class ActivityManagerService extends ActivityManagerNative
 
     @Override
     public boolean isUserRunning(int userId, int flags) {
-        if (checkCallingPermission(INTERACT_ACROSS_USERS)
-                != PackageManager.PERMISSION_GRANTED) {
+        if (userId != UserHandle.getCallingUserId() && checkCallingPermission(
+                INTERACT_ACROSS_USERS) != PackageManager.PERMISSION_GRANTED) {
             String msg = "Permission Denial: isUserRunning() from pid="
                     + Binder.getCallingPid()
                     + ", uid=" + Binder.getCallingUid()