Fix adaptive_sleep resetting after reboot

When device is locked after reboot - packageManager cannot resolve
the service. Instead, rely on the configuration that is provided
at the sign time. SystemServer relies on this as well, so it is
consistent.

Bug: 151176054
Test: manually
Change-Id: Ifc1c078e3d774d63b8aeec2fe6b332305e47847b

services/core/java/com/android/server/attention/AttentionManagerService.java

@@ -165,7 +165,7 @@ public class AttentionManagerService extends SystemService {
      * Returns {@code true} if attention service is supported on this device.
      */
     private boolean isAttentionServiceSupported() {
-        return isServiceEnabled() && isServiceAvailable();
+        return isServiceEnabled() && isServiceConfigured(mContext);
     }
 
     @VisibleForTesting
@@ -210,6 +210,11 @@ public class AttentionManagerService extends SystemService {
             return false;
         }
 
+        if (!isServiceAvailable()) {
+            Slog.w(LOG_TAG, "Service is not available at this moment.");
+            return false;
+        }
+
         // don't allow attention check in screen off state
         if (!mPowerManager.isInteractive()) {
             return false;